diff --git a/t/lib-pack.sh b/t/lib-pack.sh
index c4d907a..f346317 100644
--- a/t/lib-pack.sh
+++ b/t/lib-pack.sh
@@ -35,9 +35,11 @@
 # have hardcoded some well-known objects. See the case statements below for the
 # complete list.
 pack_obj () {
+	test_oid_init
+
 	case "$1" in
 	# empty blob
-	e69de29bb2d1d6434b8b29ae775ad8c2e48c5391)
+	$EMPTY_BLOB)
 		case "$2" in
 		'')
 			printf '\060\170\234\003\0\0\0\0\1'
@@ -47,7 +49,7 @@
 		;;
 
 	# blob containing "\7\76"
-	e68fe8129b546b101aee9510c5328e7f21ca1d18)
+	$(test_oid packlib_7_76))
 		case "$2" in
 		'')
 			printf '\062\170\234\143\267\3\0\0\116\0\106'
@@ -59,11 +61,18 @@
 			printf '\234\143\142\142\142\267\003\0\0\151\0\114'
 			return
 			;;
+		37c8e2c15bb22b912e59b43fd51a4f7e9465ed0b5084c5a1411d991cbe630683)
+			printf '\165\67\310\342\301\133\262\53\221\56\131' &&
+			printf '\264\77\325\32\117\176\224\145\355\13\120' &&
+			printf '\204\305\241\101\35\231\34\276\143\6\203\170' &&
+			printf '\234\143\142\142\142\267\003\0\0\151\0\114'
+			return
+			;;
 		esac
 		;;
 
 	# blob containing "\7\0"
-	01d7713666f4de822776c7622c10f1b07de280dc)
+	$(test_oid packlib_7_0))
 		case "$2" in
 		'')
 			printf '\062\170\234\143\147\0\0\0\20\0\10'
@@ -75,6 +84,13 @@
 			printf '\143\142\142\142\147\0\0\0\53\0\16'
 			return
 			;;
+		5d8e6fc40f2dab00e6983a48523fe57e621f46434cb58dbd4422fba03380d886)
+			printf '\165\135\216\157\304\17\55\253\0\346\230\72' &&
+			printf '\110\122\77\345\176\142\37\106\103\114\265' &&
+			printf '\215\275\104\42\373\240\63\200\330\206\170\234' &&
+			printf '\143\142\142\142\147\0\0\0\53\0\16'
+			return
+			;;
 		esac
 		;;
 	esac
@@ -86,7 +102,7 @@
 	then
 		echo "$1" | git pack-objects --stdout >pack_obj.tmp &&
 		size=$(wc -c <pack_obj.tmp) &&
-		dd if=pack_obj.tmp bs=1 count=$((size - 20 - 12)) skip=12 &&
+		dd if=pack_obj.tmp bs=1 count=$((size - $(test_oid rawsz) - 12)) skip=12 &&
 		rm -f pack_obj.tmp
 		return
 	fi
@@ -97,7 +113,8 @@
 
 # Compute and append pack trailer to "$1"
 pack_trailer () {
-	test-tool sha1 -b <"$1" >trailer.tmp &&
+	test_oid_init &&
+	test-tool $(test_oid algo) -b <"$1" >trailer.tmp &&
 	cat trailer.tmp >>"$1" &&
 	rm -f trailer.tmp
 }
@@ -108,3 +125,11 @@
 clear_packs () {
 	rm -f .git/objects/pack/*
 }
+
+test_oid_cache <<-EOF
+packlib_7_0 sha1:01d7713666f4de822776c7622c10f1b07de280dc
+packlib_7_0 sha256:37c8e2c15bb22b912e59b43fd51a4f7e9465ed0b5084c5a1411d991cbe630683
+
+packlib_7_76 sha1:e68fe8129b546b101aee9510c5328e7f21ca1d18
+packlib_7_76 sha256:5d8e6fc40f2dab00e6983a48523fe57e621f46434cb58dbd4422fba03380d886
+EOF
diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index 0575dd7..bd808f8 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -102,6 +102,14 @@
 	n3 sha256:3b0a644
 	n4 sha256:e461653
 
+	# mode change
+	o1 sha1:4d39cb3
+	o2 sha1:26c107f
+	o3 sha1:4c1e0f5
+	o1 sha256:d0dd598
+	o2 sha256:c4a279e
+	o3 sha256:78459d7
+
 	# added and removed
 	s1 sha1:096b1ba
 	s2 sha1:d92e698
@@ -336,7 +344,7 @@
 test_expect_success 'file with mode only change' '
 	git range-diff --no-color --submodule=log topic...mode-only-change >actual &&
 	sed s/Z/\ /g >expect <<-EOF &&
-	1:  fccce22 ! 1:  4d39cb3 s/4/A/
+	1:  $(test_oid t2) ! 1:  $(test_oid o1) s/4/A/
 	    @@ Metadata
 	    ZAuthor: Thomas Rast <trast@inf.ethz.ch>
 	    Z
@@ -352,7 +360,7 @@
 	    Z 7
 	    +
 	    + ## other-file (new) ##
-	2:  147e64e ! 2:  26c107f s/11/B/
+	2:  $(test_oid t3) ! 2:  $(test_oid o2) s/11/B/
 	    @@ Metadata
 	    ZAuthor: Thomas Rast <trast@inf.ethz.ch>
 	    Z
@@ -368,7 +376,7 @@
 	    Z 14
 	    +
 	    + ## other-file (mode change 100644 => 100755) ##
-	3:  a63e992 = 3:  4c1e0f5 s/12/B/
+	3:  $(test_oid t4) = 3:  $(test_oid o3) s/12/B/
 	EOF
 	test_cmp expect actual
 '
diff --git a/t/t3308-notes-merge.sh b/t/t3308-notes-merge.sh
index d60588e..790e292 100755
--- a/t/t3308-notes-merge.sh
+++ b/t/t3308-notes-merge.sh
@@ -20,7 +20,34 @@
 	git notes add -m "Notes on 3rd commit" 3rd &&
 	git notes add -m "Notes on 4th commit" 4th &&
 	# Copy notes to remote-notes
-	git fetch . refs/notes/*:refs/remote-notes/origin/*
+	git fetch . refs/notes/*:refs/remote-notes/origin/* &&
+
+	test_oid_init &&
+	test_oid_cache <<-EOF
+	hash4a sha1:5e93d24084d32e1cb61f7070505b9d2530cca987
+	hash3a sha1:8366731eeee53787d2bdf8fc1eff7d94757e8da0
+	hash2a sha1:eede89064cd42441590d6afec6c37b321ada3389
+	hash1a sha1:daa55ffad6cb99bf64226532147ffcaf5ce8bdd1
+	hash5b sha1:0f2efbd00262f2fd41dfae33df8765618eeacd99
+	hash4b sha1:dec2502dac3ea161543f71930044deff93fa945c
+	hash3b sha1:4069cdb399fd45463ec6eef8e051a16a03592d91
+	hash2c sha1:d000d30e6ddcfce3a8122c403226a2ce2fd04d9d
+	hash1c sha1:43add6bd0c8c0bc871ac7991e0f5573cfba27804
+	hash4d sha1:1f257a3a90328557c452f0817d6cc50c89d315d4
+	hash3d sha1:05a4927951bcef347f51486575b878b2b60137f2
+
+	hash4a sha256:eef876be1d32ac2e2e42240e0429325cec116e55e88cb2969899fac695aa762f
+	hash3a sha256:cf7cd1bc091d7ba4166a86df864110e42087cd893a5ae96bc50d637e0290939d
+	hash2a sha256:21ddde7ebce2c285213898cb04deca0fd3209610cf7aaf8222e4e2f45262fae2
+	hash1a sha256:f9fe0eda16c6027732ed9d4295689a03abd16f893be69b3dcbf4037ddb191921
+	hash5b sha256:20046f2244577797a9e3d3f790ea9eca4d8a6bafb2a5570bcb0e03aa02ce100b
+	hash4b sha256:f90563d134c61a95bb88afbd45d48ccc9e919c62aa6fbfcd483302b3e4d8dbcb
+	hash3b sha256:988f2aca9f2d87e93e6a73197c2bb99560cc44a2f92d18653968f956f01221e0
+	hash2c sha256:84153b777b4d42827a756c6578dcdb59d8ae5d1360b874fb37c430150c825c26
+	hash1c sha256:9beb2bc4eef72e4c4087be168a20573e34d993d9ab1883055f23e322afa06567
+	hash4d sha256:32de39dc06e679a7abb2d4a55ede7709b3124340a4a90aa305971b1c72ac319d
+	hash3d sha256:fa73b20e41cbb7541c4c81d1535016131dbfbeb05bf6a71f6115e9cad31c7af5
+	EOF
 '
 
 commit_sha1=$(git rev-parse 1st^{commit})
@@ -40,10 +67,10 @@
 }
 
 cat <<EOF | sort >expect_notes_x
-5e93d24084d32e1cb61f7070505b9d2530cca987 $commit_sha4
-8366731eeee53787d2bdf8fc1eff7d94757e8da0 $commit_sha3
-eede89064cd42441590d6afec6c37b321ada3389 $commit_sha2
-daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
+$(test_oid hash4a) $commit_sha4
+$(test_oid hash3a) $commit_sha3
+$(test_oid hash2a) $commit_sha2
+$(test_oid hash1a) $commit_sha1
 EOF
 
 cat >expect_log_x <<EOF
@@ -126,10 +153,10 @@
 '
 
 cat <<EOF | sort >expect_notes_y
-0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
-dec2502dac3ea161543f71930044deff93fa945c $commit_sha4
-4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3
-daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
+$(test_oid hash5b) $commit_sha5
+$(test_oid hash4b) $commit_sha4
+$(test_oid hash3b) $commit_sha3
+$(test_oid hash1a) $commit_sha1
 EOF
 
 cat >expect_log_y <<EOF
@@ -193,11 +220,11 @@
 '
 
 cat <<EOF | sort >expect_notes_y
-0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
-dec2502dac3ea161543f71930044deff93fa945c $commit_sha4
-4069cdb399fd45463ec6eef8e051a16a03592d91 $commit_sha3
-d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
-43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
+$(test_oid hash5b) $commit_sha5
+$(test_oid hash4b) $commit_sha4
+$(test_oid hash3b) $commit_sha3
+$(test_oid hash2c) $commit_sha2
+$(test_oid hash1c) $commit_sha1
 EOF
 
 cat >expect_log_y <<EOF
@@ -231,9 +258,9 @@
 '
 
 cat <<EOF | sort >expect_notes_x
-0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
-1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
-daa55ffad6cb99bf64226532147ffcaf5ce8bdd1 $commit_sha1
+$(test_oid hash5b) $commit_sha5
+$(test_oid hash4d) $commit_sha4
+$(test_oid hash1a) $commit_sha1
 EOF
 
 cat >expect_log_x <<EOF
@@ -262,10 +289,10 @@
 '
 
 cat <<EOF | sort >expect_notes_x
-0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
-1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
-d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
-43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
+$(test_oid hash5b) $commit_sha5
+$(test_oid hash4d) $commit_sha4
+$(test_oid hash2c) $commit_sha2
+$(test_oid hash1c) $commit_sha1
 EOF
 
 cat >expect_log_x <<EOF
@@ -296,8 +323,8 @@
 '
 
 cat <<EOF | sort >expect_notes_w
-05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3
-d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
+$(test_oid hash3d) $commit_sha3
+$(test_oid hash2c) $commit_sha2
 EOF
 
 cat >expect_log_w <<EOF
@@ -326,11 +353,11 @@
 '
 
 cat <<EOF | sort >expect_notes_x
-0f2efbd00262f2fd41dfae33df8765618eeacd99 $commit_sha5
-1f257a3a90328557c452f0817d6cc50c89d315d4 $commit_sha4
-05a4927951bcef347f51486575b878b2b60137f2 $commit_sha3
-d000d30e6ddcfce3a8122c403226a2ce2fd04d9d $commit_sha2
-43add6bd0c8c0bc871ac7991e0f5573cfba27804 $commit_sha1
+$(test_oid hash5b) $commit_sha5
+$(test_oid hash4d) $commit_sha4
+$(test_oid hash3d) $commit_sha3
+$(test_oid hash2c) $commit_sha2
+$(test_oid hash1c) $commit_sha1
 EOF
 
 cat >expect_log_x <<EOF
diff --git a/t/t3309-notes-merge-auto-resolve.sh b/t/t3309-notes-merge-auto-resolve.sh
index 14c2adf..141d3e4 100755
--- a/t/t3309-notes-merge-auto-resolve.sh
+++ b/t/t3309-notes-merge-auto-resolve.sh
@@ -23,7 +23,67 @@
 	test_commit 12th &&
 	test_commit 13th &&
 	test_commit 14th &&
-	test_commit 15th
+	test_commit 15th &&
+
+	test_oid_cache <<-EOF
+	hash15a sha1:457a85d6c814ea208550f15fcc48f804ac8dc023
+	hash14a sha1:b0c95b954301d69da2bc3723f4cb1680d355937c
+	hash13a sha1:5d30216a129eeffa97d9694ffe8c74317a560315
+	hash12a sha1:dd161bc149470fd890dd4ab52a4cbd79bbd18c36
+	hash11a sha1:7abbc45126d680336fb24294f013a7cdfa3ed545
+	hash10a sha1:b8d03e173f67f6505a76f6e00cf93440200dd9be
+	hash09a sha1:20c613c835011c48a5abe29170a2402ca6354910
+	hash08a sha1:a3daf8a1e4e5dc3409a303ad8481d57bfea7f5d6
+	hash07a sha1:897003322b53bc6ca098e9324ee508362347e734
+	hash06a sha1:11d97fdebfa5ceee540a3da07bce6fa0222bc082
+	hash15b sha1:68b8630d25516028bed862719855b3d6768d7833
+	hash14b sha1:5de7ea7ad4f47e7ff91989fb82234634730f75df
+	hash13b sha1:3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc
+	hash12b sha1:a66055fa82f7a03fe0c02a6aba3287a85abf7c62
+	hash05b sha1:154508c7a0bcad82b6fe4b472bc4c26b3bf0825b
+	hash04b sha1:e2bfd06a37dd2031684a59a6e2b033e212239c78
+	hash03b sha1:5772f42408c0dd6f097a7ca2d24de0e78d1c46b1
+	hash15c sha1:9b4b2c61f0615412da3c10f98ff85b57c04ec765
+	hash11c sha1:7e3c53503a3db8dd996cb62e37c66e070b44b54d
+	hash08c sha1:851e1638784a884c7dd26c5d41f3340f6387413a
+	hash05c sha1:99fc34adfc400b95c67b013115e37e31aa9a6d23
+	hash02c sha1:283b48219aee9a4105f6cab337e789065c82c2b9
+	hash15d sha1:7c4e546efd0fe939f876beb262ece02797880b54
+	hash05d sha1:6c841cc36ea496027290967ca96bd2bef54dbb47
+	hash15e sha1:d682107b8bf7a7aea1e537a8d5cb6a12b60135f1
+	hash05e sha1:357b6ca14c7afd59b7f8b8aaaa6b8b723771135b
+	hash15f sha1:6be90240b5f54594203e25d9f2f64b7567175aee
+	hash05f sha1:660311d7f78dc53db12ac373a43fca7465381a7e
+
+	hash15a sha256:45b1558e5c1b75f570010fa48aaa67bb2289fcd431b34ad81cb4c8b95f4f872a
+	hash14a sha256:6e7af179ea4dd28afdc83ae6912ba0098cdeff764b26a8b750b157dd81749092
+	hash13a sha256:7353089961baf555388e1bac68c67c8ea94b08ccbd97532201cf7f6790703052
+	hash12a sha256:5863e4521689ee1879ceab3b38d39e93ab5b51ec70aaf6a96ad388fbdedfa25e
+	hash11a sha256:82a0ec0338b4ecf8b44304badf4ad38d7469dc41827f38d7ba6c42e3bae3ee98
+	hash10a sha256:e84f2564e92de9792c93b8d197262c735d7ccb1de6025cef8759af8f6c3308eb
+	hash09a sha256:4dd07764bcec696f195c0ea71ae89e174876403af1637e4642b8f4453fd23028
+	hash08a sha256:02132c4546cd88a1d0aa5854dd55da120927f7904ba16afe36fe03e91a622067
+	hash07a sha256:369baf7d00c6720efdc10273493555f943051f84a4706fb24caeb353fa4789db
+	hash06a sha256:52d32c10353583b2d96a5849b1f1f43c8018e76f3e8ef1b0d46eb5cff7cdefaf
+	hash15b sha256:345e6660b345fa174738a31a7a59423c394bdf414804e200bc510c65d971ae96
+	hash14b sha256:7653a6596021c52e405cba979eea15a729993e7102b9a61ba4667e34f0ead4a1
+	hash13b sha256:0f202a0b6b9690de2349c173dfd766a37e82744f61c14f1c389306f1d69f470b
+	hash12b sha256:eb00f219c026136ea6535b16ff8ec3efa510e6bf50098ca041e1a2a1d4b79840
+	hash05b sha256:993b2290cd0c24c27c849d99f1904f3b590f77af0f539932734ad05679ac5a2f
+	hash04b sha256:c7fba0d6104917fbf35258f40b9fa4fc697cfa992deecd1570a3b08d0a5587a9
+	hash03b sha256:7287a2d78a3766c181b08df38951d784b08b72a44f571ed6d855bd0be22c70f6
+	hash15c sha256:62316660a22bf97857dc4a16709ec4d93a224e8c9f37d661ef91751e1f4c4166
+	hash11c sha256:51c3763de9b08309370adc5036d58debb331980e73097902957c444602551daa
+	hash08c sha256:22cf1fa29599898a7218c51135d66ed85d22aad584f77db3305dedce4c3d4798
+	hash05c sha256:2508fd86db980f0508893a1c1571bdf3b2ee113dc25ddb1a3a2fb94bd6cd0d58
+	hash02c sha256:63bb527e0b4e1c8e1dd0d54dd778ca7c3718689fd6e37c473044cfbcf1cacfdb
+	hash15d sha256:667acb4e2d5f8df15e5aea4506dfd16d25bc7feca70fdb0d965a7222f983bb88
+	hash05d sha256:09e6b5a6fe666c4a027674b6611a254b7d2528cd211c6b5288d1b4db6c741dfa
+	hash15e sha256:e8cbf52f6fcadc6de3c7761e64a89e9fe38d19a03d3e28ef6ca8596d93fc4f3a
+	hash05e sha256:cdb1e19f7ba1539f95af51a57edeb88a7ecc97d3c2f52da8c4c86af308595607
+	hash15f sha256:29c14cb92da448a923963b8a43994268b19c2e57913de73f3667421fd2c0eeec
+	hash05f sha256:14a6e641b2c0a9f398ebac6b4d34afa5efea4c52d2631382f45f8f662266903b
+	EOF
 '
 
 commit_sha1=$(git rev-parse 1st^{commit})
@@ -68,16 +128,16 @@
 '
 
 cat <<EOF | sort >expect_notes_x
-457a85d6c814ea208550f15fcc48f804ac8dc023 $commit_sha15
-b0c95b954301d69da2bc3723f4cb1680d355937c $commit_sha14
-5d30216a129eeffa97d9694ffe8c74317a560315 $commit_sha13
-dd161bc149470fd890dd4ab52a4cbd79bbd18c36 $commit_sha12
-7abbc45126d680336fb24294f013a7cdfa3ed545 $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-20c613c835011c48a5abe29170a2402ca6354910 $commit_sha9
-a3daf8a1e4e5dc3409a303ad8481d57bfea7f5d6 $commit_sha8
-897003322b53bc6ca098e9324ee508362347e734 $commit_sha7
-11d97fdebfa5ceee540a3da07bce6fa0222bc082 $commit_sha6
+$(test_oid hash15a) $commit_sha15
+$(test_oid hash14a) $commit_sha14
+$(test_oid hash13a) $commit_sha13
+$(test_oid hash12a) $commit_sha12
+$(test_oid hash11a) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash09a) $commit_sha9
+$(test_oid hash08a) $commit_sha8
+$(test_oid hash07a) $commit_sha7
+$(test_oid hash06a) $commit_sha6
 EOF
 
 cat >expect_log_x <<EOF
@@ -141,16 +201,16 @@
 '
 
 cat <<EOF | sort >expect_notes_y
-68b8630d25516028bed862719855b3d6768d7833 $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
-a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
-7abbc45126d680336fb24294f013a7cdfa3ed545 $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-20c613c835011c48a5abe29170a2402ca6354910 $commit_sha9
-154508c7a0bcad82b6fe4b472bc4c26b3bf0825b $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
+$(test_oid hash15b) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13b) $commit_sha13
+$(test_oid hash12b) $commit_sha12
+$(test_oid hash11a) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash09a) $commit_sha9
+$(test_oid hash05b) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
 EOF
 
 cat >expect_log_y <<EOF
@@ -214,16 +274,16 @@
 '
 
 cat <<EOF | sort >expect_notes_z
-9b4b2c61f0615412da3c10f98ff85b57c04ec765 $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-5d30216a129eeffa97d9694ffe8c74317a560315 $commit_sha13
-7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
-897003322b53bc6ca098e9324ee508362347e734 $commit_sha7
-99fc34adfc400b95c67b013115e37e31aa9a6d23 $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
+$(test_oid hash15c) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13a) $commit_sha13
+$(test_oid hash11c) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash08c) $commit_sha8
+$(test_oid hash07a) $commit_sha7
+$(test_oid hash05c) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash02c) $commit_sha2
 EOF
 
 cat >expect_log_z <<EOF
@@ -306,16 +366,16 @@
 '
 
 cat <<EOF | sort >expect_notes_ours
-68b8630d25516028bed862719855b3d6768d7833 $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
-a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
-7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-154508c7a0bcad82b6fe4b472bc4c26b3bf0825b $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
+$(test_oid hash15b) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13b) $commit_sha13
+$(test_oid hash12b) $commit_sha12
+$(test_oid hash11c) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash05b) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02c) $commit_sha2
 EOF
 
 cat >expect_log_ours <<EOF
@@ -395,16 +455,16 @@
 '
 
 cat <<EOF | sort >expect_notes_theirs
-9b4b2c61f0615412da3c10f98ff85b57c04ec765 $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
-7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
-99fc34adfc400b95c67b013115e37e31aa9a6d23 $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
+$(test_oid hash15c) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13b) $commit_sha13
+$(test_oid hash11c) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash08c) $commit_sha8
+$(test_oid hash05c) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02c) $commit_sha2
 EOF
 
 cat >expect_log_theirs <<EOF
@@ -473,17 +533,17 @@
 '
 
 cat <<EOF | sort >expect_notes_union
-7c4e546efd0fe939f876beb262ece02797880b54 $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
-a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
-7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
-6c841cc36ea496027290967ca96bd2bef54dbb47 $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
+$(test_oid hash15d) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13b) $commit_sha13
+$(test_oid hash12b) $commit_sha12
+$(test_oid hash11c) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash08c) $commit_sha8
+$(test_oid hash05d) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02c) $commit_sha2
 EOF
 
 cat >expect_log_union <<EOF
@@ -574,17 +634,17 @@
 '
 
 cat <<EOF | sort >expect_notes_union2
-d682107b8bf7a7aea1e537a8d5cb6a12b60135f1 $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
-a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
-7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
-357b6ca14c7afd59b7f8b8aaaa6b8b723771135b $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
+$(test_oid hash15e) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13b) $commit_sha13
+$(test_oid hash12b) $commit_sha12
+$(test_oid hash11c) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash08c) $commit_sha8
+$(test_oid hash05e) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02c) $commit_sha2
 EOF
 
 cat >expect_log_union2 <<EOF
@@ -648,17 +708,17 @@
 '
 
 cat <<EOF | sort >expect_notes_cat_sort_uniq
-6be90240b5f54594203e25d9f2f64b7567175aee $commit_sha15
-5de7ea7ad4f47e7ff91989fb82234634730f75df $commit_sha14
-3a631fdb6f41b05b55d8f4baf20728ba8f6fccbc $commit_sha13
-a66055fa82f7a03fe0c02a6aba3287a85abf7c62 $commit_sha12
-7e3c53503a3db8dd996cb62e37c66e070b44b54d $commit_sha11
-b8d03e173f67f6505a76f6e00cf93440200dd9be $commit_sha10
-851e1638784a884c7dd26c5d41f3340f6387413a $commit_sha8
-660311d7f78dc53db12ac373a43fca7465381a7e $commit_sha5
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
+$(test_oid hash15f) $commit_sha15
+$(test_oid hash14b) $commit_sha14
+$(test_oid hash13b) $commit_sha13
+$(test_oid hash12b) $commit_sha12
+$(test_oid hash11c) $commit_sha11
+$(test_oid hash10a) $commit_sha10
+$(test_oid hash08c) $commit_sha8
+$(test_oid hash05f) $commit_sha5
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02c) $commit_sha2
 EOF
 
 cat >expect_log_cat_sort_uniq <<EOF
diff --git a/t/t3310-notes-merge-manual-resolve.sh b/t/t3310-notes-merge-manual-resolve.sh
index d746f4b..d3d72e2 100755
--- a/t/t3310-notes-merge-manual-resolve.sh
+++ b/t/t3310-notes-merge-manual-resolve.sh
@@ -13,7 +13,39 @@
 	test_commit 2nd &&
 	test_commit 3rd &&
 	test_commit 4th &&
-	test_commit 5th
+	test_commit 5th &&
+
+	test_oid_cache <<-EOF
+	hash04a sha1:6e8e3febca3c2bb896704335cc4d0c34cb2f8715
+	hash03a sha1:e5388c10860456ee60673025345fe2e153eb8cf8
+	hash02a sha1:ceefa674873670e7ecd131814d909723cce2b669
+	hash04b sha1:e2bfd06a37dd2031684a59a6e2b033e212239c78
+	hash03b sha1:5772f42408c0dd6f097a7ca2d24de0e78d1c46b1
+	hash01b sha1:b0a6021ec006d07e80e9b20ec9b444cbd9d560d3
+	hash04c sha1:cff59c793c20bb49a4e01bc06fb06bad642e0d54
+	hash02c sha1:283b48219aee9a4105f6cab337e789065c82c2b9
+	hash01c sha1:0a81da8956346e19bcb27a906f04af327e03e31b
+	hash04d sha1:00494adecf2d9635a02fa431308d67993f853968
+	hash01e sha1:f75d1df88cbfe4258d49852f26cfc83f2ad4494b
+	hash04f sha1:021faa20e931fb48986ffc6282b4bb05553ac946
+	hash01f sha1:0a59e787e6d688aa6309e56e8c1b89431a0fc1c1
+	hash05g sha1:304dfb4325cf243025b9957486eb605a9b51c199
+
+	hash04a	sha256:f18a935e65866345098b3b754071dbf9f3aa3520eb27a7b036b278c5e2f1ed7e
+	hash03a	sha256:713035dc94067a64e5fa6e4e1821b7c3bde49a77c7cb3f80eaadefa1ca41b3d2
+	hash02a	sha256:f160a67e048b6fa75bec3952184154045076692cf5dccd3da21e3fd34b7a3f0f
+	hash04b sha256:c7fba0d6104917fbf35258f40b9fa4fc697cfa992deecd1570a3b08d0a5587a9
+	hash03b sha256:7287a2d78a3766c181b08df38951d784b08b72a44f571ed6d855bd0be22c70f6
+	hash01b sha256:da96cf778c15d0a2bb76f98b2a62f6c9c01730fa7030e8f08ef0191048e7d620
+	hash04c sha256:cb615d2def4b834d5f55b2351df97dc92bee4f5009d285201427f349081c8aca
+	hash02c sha256:63bb527e0b4e1c8e1dd0d54dd778ca7c3718689fd6e37c473044cfbcf1cacfdb
+	hash01c sha256:5b87237ac1fbae0246256fed9f9a1f077c4140fb7e6444925f8dbfa5ae406cd8
+	hash04d sha256:eeddc9f9f6cb3d6b39b861659853f10891dc373e0b6eecb09e03e39b6ce64714
+	hash01e sha256:108f521b1a74c2e6d0b52a4eda87e09162bf847f7d190cfce496ee1af0b29a5a
+	hash04f sha256:901acda0454502b3bbd281f130c419e6c8de78afcf72a8def8d45ad31462bce4
+	hash01f sha256:a2d99d1b8bf23c8af7d9d91368454adc110dfd5cc068a4cebb486ee8f5a1e16c
+	hash05g sha256:4fef015b01da8efe929a68e3bb9b8fbad81f53995f097befe8ebc93f12ab98ec
+	EOF
 '
 
 commit_sha1=$(git rev-parse 1st^{commit})
@@ -39,9 +71,9 @@
 }
 
 cat <<EOF | sort >expect_notes_x
-6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4
-e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3
-ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
+$(test_oid hash04a) $commit_sha4
+$(test_oid hash03a) $commit_sha3
+$(test_oid hash02a) $commit_sha2
 EOF
 
 cat >expect_log_x <<EOF
@@ -69,9 +101,9 @@
 '
 
 cat <<EOF | sort >expect_notes_y
-e2bfd06a37dd2031684a59a6e2b033e212239c78 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-b0a6021ec006d07e80e9b20ec9b444cbd9d560d3 $commit_sha1
+$(test_oid hash04b) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash01b) $commit_sha1
 EOF
 
 cat >expect_log_y <<EOF
@@ -101,9 +133,9 @@
 '
 
 cat <<EOF | sort >expect_notes_z
-cff59c793c20bb49a4e01bc06fb06bad642e0d54 $commit_sha4
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
-0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1
+$(test_oid hash04c) $commit_sha4
+$(test_oid hash02c) $commit_sha2
+$(test_oid hash01c) $commit_sha1
 EOF
 
 cat >expect_log_z <<EOF
@@ -199,9 +231,9 @@
 '
 
 cat <<EOF | sort >expect_notes_z
-00494adecf2d9635a02fa431308d67993f853968 $commit_sha4
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
-0a81da8956346e19bcb27a906f04af327e03e31b $commit_sha1
+$(test_oid hash04d) $commit_sha4
+$(test_oid hash02c) $commit_sha2
+$(test_oid hash01c) $commit_sha1
 EOF
 
 cat >expect_log_z <<EOF
@@ -237,8 +269,8 @@
 # Setup non-conflicting merge between x and new notes ref w
 
 cat <<EOF | sort >expect_notes_w
-ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
-f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1
+$(test_oid hash02a) $commit_sha2
+$(test_oid hash01e) $commit_sha1
 EOF
 
 cat >expect_log_w <<EOF
@@ -264,10 +296,10 @@
 '
 
 cat <<EOF | sort >expect_notes_w
-6e8e3febca3c2bb896704335cc4d0c34cb2f8715 $commit_sha4
-e5388c10860456ee60673025345fe2e153eb8cf8 $commit_sha3
-ceefa674873670e7ecd131814d909723cce2b669 $commit_sha2
-f75d1df88cbfe4258d49852f26cfc83f2ad4494b $commit_sha1
+$(test_oid hash04a) $commit_sha4
+$(test_oid hash03a) $commit_sha3
+$(test_oid hash02a) $commit_sha2
+$(test_oid hash01e) $commit_sha1
 EOF
 
 cat >expect_log_w <<EOF
@@ -297,10 +329,10 @@
 '
 
 cat <<EOF | sort >expect_notes_m
-021faa20e931fb48986ffc6282b4bb05553ac946 $commit_sha4
-5772f42408c0dd6f097a7ca2d24de0e78d1c46b1 $commit_sha3
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
-0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1
+$(test_oid hash04f) $commit_sha4
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02c) $commit_sha2
+$(test_oid hash01f) $commit_sha1
 EOF
 
 cat >expect_log_m <<EOF
@@ -432,9 +464,9 @@
 '
 
 cat <<EOF | sort >expect_notes_m
-304dfb4325cf243025b9957486eb605a9b51c199 $commit_sha5
-283b48219aee9a4105f6cab337e789065c82c2b9 $commit_sha2
-0a59e787e6d688aa6309e56e8c1b89431a0fc1c1 $commit_sha1
+$(test_oid hash05g) $commit_sha5
+$(test_oid hash02c) $commit_sha2
+$(test_oid hash01f) $commit_sha1
 EOF
 
 cat >expect_log_m <<EOF
diff --git a/t/t3311-notes-merge-fanout.sh b/t/t3311-notes-merge-fanout.sh
index 37151a3..5b67541 100755
--- a/t/t3311-notes-merge-fanout.sh
+++ b/t/t3311-notes-merge-fanout.sh
@@ -29,15 +29,10 @@
 	git ls-tree -r --name-only "refs/notes/$notes_ref" |
 	while read path
 	do
-		case "$path" in
-		??/??????????????????????????????????????)
-			: true
-			;;
-		*)
+		echo "$path" | grep "^../[0-9a-f]*$" || {
 			echo "Invalid path \"$path\"" &&
-			return 1
-			;;
-		esac
+			return 1;
+		}
 	done
 }
 
@@ -48,15 +43,10 @@
 	git ls-tree -r --name-only "refs/notes/$notes_ref" |
 	while read path
 	do
-		case "$path" in
-		????????????????????????????????????????)
-			: true
-			;;
-		*)
+		echo "$path" | grep -v "^../.*" || {
 			echo "Invalid path \"$path\"" &&
-			return 1
-			;;
-		esac
+			return 1;
+		}
 	done
 }
 
@@ -67,7 +57,27 @@
 	do
 		test_commit "commit$i" >/dev/null &&
 		git notes add -m "notes for commit$i" || return 1
-	done
+	done &&
+
+	git log --format=oneline &&
+
+	test_oid_cache <<-EOF
+	hash05a sha1:aed91155c7a72c2188e781fdf40e0f3761b299db
+	hash04a sha1:99fab268f9d7ee7b011e091a436c78def8eeee69
+	hash03a sha1:953c20ae26c7aa0b428c20693fe38bc687f9d1a9
+	hash02a sha1:6358796131b8916eaa2dde6902642942a1cb37e1
+	hash01a sha1:b02d459c32f0e68f2fe0981033bb34f38776ba47
+	hash03b sha1:9f506ee70e20379d7f78204c77b334f43d77410d
+	hash02b sha1:23a47d6ea7d589895faf800752054818e1e7627b
+
+	hash05a sha256:3aae5d26619d96dba93795f66325716e4cbc486884f95a6adee8fb0615a76d12
+	hash04a sha256:07e43dd3d89fe634d3252e253b426aacc7285a995dcdbcf94ac284060a1122cf
+	hash03a sha256:26fb52eaa7f4866bf735254587be7b31209ec10e525912ffd8e8ba549ba892ff
+	hash02a sha256:b57ebdf23634e750dcbc4b9a37991d70f90830d568a0e4529ce9de0a3f8d605c
+	hash01a sha256:377903b1572bd5117087a5518fcb1011b5053cccbc59e3c7c823a8615204173b
+	hash03b sha256:04e7b392fda7c185bfa17c9179b56db732edc2dc2b3bf887308dcaabb717270d
+	hash02b sha256:66099aaaec49a485ed990acadd9a9b81232ea592079964113d8f581ff69ef50b
+	EOF
 '
 
 commit_sha1=$(git rev-parse commit1^{commit})
@@ -77,11 +87,11 @@
 commit_sha5=$(git rev-parse commit5^{commit})
 
 cat <<EOF | sort >expect_notes_x
-aed91155c7a72c2188e781fdf40e0f3761b299db $commit_sha5
-99fab268f9d7ee7b011e091a436c78def8eeee69 $commit_sha4
-953c20ae26c7aa0b428c20693fe38bc687f9d1a9 $commit_sha3
-6358796131b8916eaa2dde6902642942a1cb37e1 $commit_sha2
-b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1
+$(test_oid hash05a) $commit_sha5
+$(test_oid hash04a) $commit_sha4
+$(test_oid hash03a) $commit_sha3
+$(test_oid hash02a) $commit_sha2
+$(test_oid hash01a) $commit_sha1
 EOF
 
 cat >expect_log_x <<EOF
@@ -145,9 +155,9 @@
 '
 
 cat <<EOF | sort >expect_notes_z
-9f506ee70e20379d7f78204c77b334f43d77410d $commit_sha3
-23a47d6ea7d589895faf800752054818e1e7627b $commit_sha2
-b02d459c32f0e68f2fe0981033bb34f38776ba47 $commit_sha1
+$(test_oid hash03b) $commit_sha3
+$(test_oid hash02b) $commit_sha2
+$(test_oid hash01a) $commit_sha1
 EOF
 
 cat >expect_log_z <<EOF
diff --git a/t/t4013-diff-various.sh b/t/t4013-diff-various.sh
index 5ac94b3..dde3f11 100755
--- a/t/t4013-diff-various.sh
+++ b/t/t4013-diff-various.sh
@@ -120,6 +120,30 @@
 +*++ [initial] Initial
 EOF
 
+process_diffs () {
+	_x04="[0-9a-f][0-9a-f][0-9a-f][0-9a-f]" &&
+	_x07="$_x05[0-9a-f][0-9a-f]" &&
+	sed -e "s/$OID_REGEX/$ZERO_OID/g" \
+	    -e "s/From $_x40 /From $ZERO_OID /" \
+	    -e "s/from $_x40)/from $ZERO_OID)/" \
+	    -e "s/commit $_x40\$/commit $ZERO_OID/" \
+	    -e "s/commit $_x40 (/commit $ZERO_OID (/" \
+	    -e "s/$_x40 $_x40 $_x40/$ZERO_OID $ZERO_OID $ZERO_OID/" \
+	    -e "s/$_x40 $_x40 /$ZERO_OID $ZERO_OID /" \
+	    -e "s/^$_x40 $_x40$/$ZERO_OID $ZERO_OID/" \
+	    -e "s/^$_x40 /$ZERO_OID /" \
+	    -e "s/^$_x40$/$ZERO_OID/" \
+	    -e "s/$_x07\.\.$_x07/fffffff..fffffff/g" \
+	    -e "s/$_x07,$_x07\.\.$_x07/fffffff,fffffff..fffffff/g" \
+	    -e "s/$_x07 $_x07 $_x07/fffffff fffffff fffffff/g" \
+	    -e "s/$_x07 $_x07 /fffffff fffffff /g" \
+	    -e "s/Merge: $_x07 $_x07/Merge: fffffff fffffff/g" \
+	    -e "s/$_x07\.\.\./fffffff.../g" \
+	    -e "s/ $_x04\.\.\./ ffff.../g" \
+	    -e "s/ $_x04/ ffff/g" \
+	    "$1"
+}
+
 V=$(git version | sed -e 's/^git version //' -e 's/\./\\./g')
 while read magic cmd
 do
@@ -158,13 +182,15 @@
 		} >"$actual" &&
 		if test -f "$expect"
 		then
+			process_diffs "$actual" >actual &&
+			process_diffs "$expect" >expect &&
 			case $cmd in
 			*format-patch* | *-stat*)
-				test_i18ncmp "$expect" "$actual";;
+				test_i18ncmp expect actual;;
 			*)
-				test_cmp "$expect" "$actual";;
+				test_cmp expect actual;;
 			esac &&
-			rm -f "$actual"
+			rm -f "$actual" actual expect
 		else
 			# this is to help developing new tests.
 			cp "$actual" "$expect"
@@ -383,16 +409,22 @@
 test_expect_success 'diff --cached on unborn branch' '
 	echo ref: refs/heads/unborn >.git/HEAD &&
 	git diff --cached >result &&
-	test_cmp "$TEST_DIRECTORY/t4013/diff.diff_--cached" result
+	process_diffs result >actual &&
+	process_diffs "$TEST_DIRECTORY/t4013/diff.diff_--cached" >expected &&
+	test_cmp expected actual
 '
 
 test_expect_success 'diff --cached -- file on unborn branch' '
 	git diff --cached -- file0 >result &&
-	test_cmp "$TEST_DIRECTORY/t4013/diff.diff_--cached_--_file0" result
+	process_diffs result >actual &&
+	process_diffs "$TEST_DIRECTORY/t4013/diff.diff_--cached_--_file0" >expected &&
+	test_cmp expected actual
 '
 test_expect_success 'diff --line-prefix with spaces' '
 	git diff --line-prefix="| | | " --cached -- file0 >result &&
-	test_cmp "$TEST_DIRECTORY/t4013/diff.diff_--line-prefix_--cached_--_file0" result
+	process_diffs result >actual &&
+	process_diffs "$TEST_DIRECTORY/t4013/diff.diff_--line-prefix_--cached_--_file0" >expected &&
+	test_cmp expected actual
 '
 
 test_expect_success 'diff-tree --stdin with log formatting' '
diff --git a/t/t4060-diff-submodule-option-diff-format.sh b/t/t4060-diff-submodule-option-diff-format.sh
index 9dcb69d..fc8229c 100755
--- a/t/t4060-diff-submodule-option-diff-format.sh
+++ b/t/t4060-diff-submodule-option-diff-format.sh
@@ -42,6 +42,17 @@
 	git commit "$@" -m "Commit $*" >/dev/null
 }
 
+diff_cmp () {
+       for i in "$1" "$2"
+       do
+		sed -e 's/^index 0000000\.\.[0-9a-f]*/index 0000000..1234567/' \
+		-e 's/^index [0-9a-f]*\.\.[0-9a-f]*/index 1234567..89abcde/' \
+		"$i" >"$i.compare" || return 1
+       done &&
+       test_cmp "$1.compare" "$2.compare" &&
+       rm -f "$1.compare" "$2.compare"
+}
+
 test_expect_success 'setup repository' '
 	test_create_repo sm1 &&
 	add_file . foo &&
@@ -69,7 +80,7 @@
 	@@ -0,0 +1 @@
 	+foo2
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'added submodule, set diff.submodule' '
@@ -93,7 +104,7 @@
 	@@ -0,0 +1 @@
 	+foo2
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success '--submodule=short overrides diff.submodule' '
@@ -109,7 +120,7 @@
 	@@ -0,0 +1 @@
 	+Subproject commit $fullhead1
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'diff.submodule does not affect plumbing' '
@@ -124,7 +135,7 @@
 	@@ -0,0 +1 @@
 	+Subproject commit $fullhead1
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 commit_file sm1 &&
@@ -142,7 +153,7 @@
 	@@ -0,0 +1 @@
 	+foo3
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule(forward)' '
@@ -157,7 +168,7 @@
 	@@ -0,0 +1 @@
 	+foo3
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule(forward) --submodule' '
@@ -166,7 +177,7 @@
 	Submodule sm1 $head1..$head2:
 	  > Add foo3 ($added foo3)
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 fullhead2=$(cd sm1; git rev-parse --verify HEAD)
@@ -181,7 +192,7 @@
 	-Subproject commit $fullhead1
 	+Subproject commit $fullhead2
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 commit_file sm1 &&
@@ -210,7 +221,7 @@
 	@@ -1 +0,0 @@
 	-foo3
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 head4=$(add_file sm1 foo4 foo5)
@@ -247,7 +258,7 @@
 	@@ -0,0 +1 @@
 	+foo5
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 commit_file sm1 &&
@@ -291,7 +302,7 @@
 	@@ -0,0 +1 @@
 	+sm1
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'typechanged submodule(submodule->blob)' '
@@ -327,7 +338,7 @@
 	@@ -0,0 +1 @@
 	+foo5
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 rm -rf sm1 &&
@@ -344,7 +355,7 @@
 	@@ -0,0 +1 @@
 	+sm1
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 rm -f sm1 &&
@@ -356,7 +367,7 @@
 	cat >expected <<-EOF &&
 	Submodule sm1 $head4...$head6 (commits not present)
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 commit_file
@@ -386,11 +397,12 @@
 	@@ -0,0 +1 @@
 	+foo7
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 commit_file sm1 &&
 test_expect_success 'submodule is up to date' '
+	head7=$(git -C sm1 rev-parse --short --verify HEAD) &&
 	git diff-index -p --submodule=diff HEAD >actual &&
 	test_must_be_empty actual
 '
@@ -401,7 +413,7 @@
 	cat >expected <<-EOF &&
 	Submodule sm1 contains untracked content
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'submodule contains untracked content (untracked ignored)' '
@@ -433,7 +445,7 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 # NOT OK
@@ -450,7 +462,7 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'submodule contains untracked and modified content (dirty ignored)' '
@@ -478,7 +490,7 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 (cd sm1; git commit -mchange foo6 >/dev/null) &&
@@ -486,7 +498,7 @@
 test_expect_success 'submodule is modified' '
 	git diff-index -p --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9..$head8:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..3e75765 100644
 	--- a/sm1/foo6
@@ -495,7 +507,7 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked content' '
@@ -503,7 +515,7 @@
 	git diff-index -p --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 contains untracked content
-	Submodule sm1 17243c9..$head8:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..3e75765 100644
 	--- a/sm1/foo6
@@ -512,13 +524,13 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked content (untracked ignored)' '
 	git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9..$head8:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..3e75765 100644
 	--- a/sm1/foo6
@@ -527,13 +539,13 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked content (dirty ignored)' '
 	git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9..cfce562:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..3e75765 100644
 	--- a/sm1/foo6
@@ -542,7 +554,7 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked content (all ignored)' '
@@ -556,7 +568,7 @@
 	cat >expected <<-EOF &&
 	Submodule sm1 contains untracked content
 	Submodule sm1 contains modified content
-	Submodule sm1 17243c9..cfce562:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..dfda541 100644
 	--- a/sm1/foo6
@@ -566,7 +578,7 @@
 	+new
 	+modification
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked and modified content (untracked ignored)' '
@@ -574,7 +586,7 @@
 	git diff-index -p --ignore-submodules=untracked --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 contains modified content
-	Submodule sm1 17243c9..cfce562:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..e20e2d9 100644
 	--- a/sm1/foo6
@@ -585,14 +597,14 @@
 	+modification
 	+modification
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked and modified content (dirty ignored)' '
 	echo modification >> sm1/foo6 &&
 	git diff-index -p --ignore-submodules=dirty --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9..cfce562:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..3e75765 100644
 	--- a/sm1/foo6
@@ -601,7 +613,7 @@
 	-foo6
 	+new
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'modified submodule contains untracked and modified content (all ignored)' '
@@ -616,7 +628,7 @@
 	git diff-index -p --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
 	Submodule sm1 contains modified content
-	Submodule sm1 17243c9..cfce562:
+	Submodule sm1 $head7..$head8:
 	diff --git a/sm1/foo6 b/sm1/foo6
 	index 462398b..ac466ca 100644
 	--- a/sm1/foo6
@@ -629,29 +641,29 @@
 	+modification
 	+modification
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 rm -rf sm1
 test_expect_success 'deleted submodule' '
 	git diff-index -p --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9...0000000 (submodule deleted)
+	Submodule sm1 $head7...0000000 (submodule deleted)
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'create second submodule' '
 	test_create_repo sm2 &&
-	head7=$(add_file sm2 foo8 foo9) &&
+	head9=$(add_file sm2 foo8 foo9) &&
 	git add sm2
 '
 
 test_expect_success 'multiple submodules' '
 	git diff-index -p --submodule=diff HEAD >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9...0000000 (submodule deleted)
-	Submodule sm2 0000000...a5a65c9 (new submodule)
+	Submodule sm1 $head7...0000000 (submodule deleted)
+	Submodule sm2 0000000...$head9 (new submodule)
 	diff --git a/sm2/foo8 b/sm2/foo8
 	new file mode 100644
 	index 0000000..db9916b
@@ -667,13 +679,13 @@
 	@@ -0,0 +1 @@
 	+foo9
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'path filter' '
 	git diff-index -p --submodule=diff HEAD sm2 >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm2 0000000...a5a65c9 (new submodule)
+	Submodule sm2 0000000...$head9 (new submodule)
 	diff --git a/sm2/foo8 b/sm2/foo8
 	new file mode 100644
 	index 0000000..db9916b
@@ -689,15 +701,15 @@
 	@@ -0,0 +1 @@
 	+foo9
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 commit_file sm2
 test_expect_success 'given commit' '
 	git diff-index -p --submodule=diff HEAD^ >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9...0000000 (submodule deleted)
-	Submodule sm2 0000000...a5a65c9 (new submodule)
+	Submodule sm1 $head7...0000000 (submodule deleted)
+	Submodule sm2 0000000...$head9 (new submodule)
 	diff --git a/sm2/foo8 b/sm2/foo8
 	new file mode 100644
 	index 0000000..db9916b
@@ -713,7 +725,7 @@
 	@@ -0,0 +1 @@
 	+foo9
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'setup .git file for sm2' '
@@ -726,8 +738,8 @@
 test_expect_success 'diff --submodule=diff with .git file' '
 	git diff --submodule=diff HEAD^ >actual &&
 	cat >expected <<-EOF &&
-	Submodule sm1 17243c9...0000000 (submodule deleted)
-	Submodule sm2 0000000...a5a65c9 (new submodule)
+	Submodule sm1 $head7...0000000 (submodule deleted)
+	Submodule sm2 0000000...$head9 (new submodule)
 	diff --git a/sm2/foo8 b/sm2/foo8
 	new file mode 100644
 	index 0000000..db9916b
@@ -743,25 +755,27 @@
 	@@ -0,0 +1 @@
 	+foo9
 	EOF
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'setup nested submodule' '
 	git submodule add -f ./sm2 &&
 	git commit -a -m "add sm2" &&
 	git -C sm2 submodule add ../sm2 nested &&
-	git -C sm2 commit -a -m "nested sub"
+	git -C sm2 commit -a -m "nested sub" &&
+	head10=$(git -C sm2 rev-parse --short --verify HEAD)
 '
 
 test_expect_success 'move nested submodule HEAD' '
 	echo "nested content" >sm2/nested/file &&
 	git -C sm2/nested add file &&
-	git -C sm2/nested commit --allow-empty -m "new HEAD"
+	git -C sm2/nested commit --allow-empty -m "new HEAD" &&
+	head11=$(git -C sm2/nested rev-parse --short --verify HEAD)
 '
 
 test_expect_success 'diff --submodule=diff with moved nested submodule HEAD' '
 	cat >expected <<-EOF &&
-	Submodule nested a5a65c9..b55928c:
+	Submodule nested $head9..$head11:
 	diff --git a/nested/file b/nested/file
 	new file mode 100644
 	index 0000000..ca281f5
@@ -772,13 +786,13 @@
 	EOF
 	git -C sm2 diff --submodule=diff >actual 2>err &&
 	test_must_be_empty err &&
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_expect_success 'diff --submodule=diff recurses into nested submodules' '
 	cat >expected <<-EOF &&
 	Submodule sm2 contains modified content
-	Submodule sm2 a5a65c9..280969a:
+	Submodule sm2 $head9..$head10:
 	diff --git a/sm2/.gitmodules b/sm2/.gitmodules
 	new file mode 100644
 	index 0000000..3a816b8
@@ -788,7 +802,7 @@
 	+[submodule "nested"]
 	+	path = nested
 	+	url = ../sm2
-	Submodule nested 0000000...b55928c (new submodule)
+	Submodule nested 0000000...$head11 (new submodule)
 	diff --git a/sm2/nested/file b/sm2/nested/file
 	new file mode 100644
 	index 0000000..ca281f5
@@ -813,7 +827,7 @@
 	EOF
 	git diff --submodule=diff >actual 2>err &&
 	test_must_be_empty err &&
-	test_cmp expected actual
+	diff_cmp expected actual
 '
 
 test_done
diff --git a/t/t4211-line-log.sh b/t/t4211-line-log.sh
index 8319163..cda5818 100755
--- a/t/t4211-line-log.sh
+++ b/t/t4211-line-log.sh
@@ -4,6 +4,7 @@
 . ./test-lib.sh
 
 test_expect_success 'setup (import history)' '
+	test_oid_init &&
 	git fast-import < "$TEST_DIRECTORY"/t4211/history.export &&
 	git reset --hard
 '
@@ -11,7 +12,7 @@
 canned_test_1 () {
 	test_expect_$1 "$2" "
 		git log $2 >actual &&
-		test_cmp \"\$TEST_DIRECTORY\"/t4211/expect.$3 actual
+		test_cmp \"\$TEST_DIRECTORY\"/t4211/$(test_oid algo)/expect.$3 actual
 	"
 }
 
diff --git a/t/t4211/expect.beginning-of-file b/t/t4211/sha1/expect.beginning-of-file
similarity index 100%
rename from t/t4211/expect.beginning-of-file
rename to t/t4211/sha1/expect.beginning-of-file
diff --git a/t/t4211/expect.end-of-file b/t/t4211/sha1/expect.end-of-file
similarity index 100%
rename from t/t4211/expect.end-of-file
rename to t/t4211/sha1/expect.end-of-file
diff --git a/t/t4211/expect.move-support-f b/t/t4211/sha1/expect.move-support-f
similarity index 100%
rename from t/t4211/expect.move-support-f
rename to t/t4211/sha1/expect.move-support-f
diff --git a/t/t4211/expect.multiple b/t/t4211/sha1/expect.multiple
similarity index 100%
rename from t/t4211/expect.multiple
rename to t/t4211/sha1/expect.multiple
diff --git a/t/t4211/expect.multiple-overlapping b/t/t4211/sha1/expect.multiple-overlapping
similarity index 100%
rename from t/t4211/expect.multiple-overlapping
rename to t/t4211/sha1/expect.multiple-overlapping
diff --git a/t/t4211/expect.multiple-superset b/t/t4211/sha1/expect.multiple-superset
similarity index 100%
rename from t/t4211/expect.multiple-superset
rename to t/t4211/sha1/expect.multiple-superset
diff --git a/t/t4211/expect.parallel-change-f-to-main b/t/t4211/sha1/expect.parallel-change-f-to-main
similarity index 100%
rename from t/t4211/expect.parallel-change-f-to-main
rename to t/t4211/sha1/expect.parallel-change-f-to-main
diff --git a/t/t4211/expect.simple-f b/t/t4211/sha1/expect.simple-f
similarity index 100%
rename from t/t4211/expect.simple-f
rename to t/t4211/sha1/expect.simple-f
diff --git a/t/t4211/expect.simple-f-to-main b/t/t4211/sha1/expect.simple-f-to-main
similarity index 100%
rename from t/t4211/expect.simple-f-to-main
rename to t/t4211/sha1/expect.simple-f-to-main
diff --git a/t/t4211/expect.simple-main b/t/t4211/sha1/expect.simple-main
similarity index 100%
rename from t/t4211/expect.simple-main
rename to t/t4211/sha1/expect.simple-main
diff --git a/t/t4211/expect.simple-main-to-end b/t/t4211/sha1/expect.simple-main-to-end
similarity index 100%
rename from t/t4211/expect.simple-main-to-end
rename to t/t4211/sha1/expect.simple-main-to-end
diff --git a/t/t4211/expect.two-ranges b/t/t4211/sha1/expect.two-ranges
similarity index 100%
rename from t/t4211/expect.two-ranges
rename to t/t4211/sha1/expect.two-ranges
diff --git a/t/t4211/expect.vanishes-early b/t/t4211/sha1/expect.vanishes-early
similarity index 100%
rename from t/t4211/expect.vanishes-early
rename to t/t4211/sha1/expect.vanishes-early
diff --git a/t/t4211/sha256/expect.beginning-of-file b/t/t4211/sha256/expect.beginning-of-file
new file mode 100644
index 0000000..5adfdfc
--- /dev/null
+++ b/t/t4211/sha256/expect.beginning-of-file
@@ -0,0 +1,43 @@
+commit 62a40b38fa4f00800004aee81ef287b7201317594ebcb990f38cbe493b01d200
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:47:40 2013 +0100
+
+    change at very beginning
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -1,3 +1,4 @@
++#include <unistd.h>
+ #include <stdio.h>
+ 
+ long f(long x)
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -1,3 +1,3 @@
+ #include <stdio.h>
+ 
+-int f(int x)
++long f(long x)
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +1,3 @@
++#include <stdio.h>
++
++int f(int x)
diff --git a/t/t4211/sha256/expect.end-of-file b/t/t4211/sha256/expect.end-of-file
new file mode 100644
index 0000000..03ab5c1
--- /dev/null
+++ b/t/t4211/sha256/expect.end-of-file
@@ -0,0 +1,62 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -20,3 +20,5 @@
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
++
++/* incomplete lines are bad! */
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -20,3 +20,3 @@
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -19,3 +19,3 @@
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +18,3 @@
++	printf("%d\n", f(15));
++	return 0;
++}
diff --git a/t/t4211/sha256/expect.move-support-f b/t/t4211/sha256/expect.move-support-f
new file mode 100644
index 0000000..223b4ed
--- /dev/null
+++ b/t/t4211/sha256/expect.move-support-f
@@ -0,0 +1,80 @@
+commit 4f7a58195a92c400e28a2354328587f1ff14fb77f5cf894536f17ccbc72931b9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:49:50 2013 +0100
+
+    another simple change
+
+diff --git a/b.c b/b.c
+--- a/b.c
++++ b/b.c
+@@ -4,9 +4,9 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+-		x >>= 1;
++		x /= 2;
+ 		s++;
+ 	}
+ 	return s;
+ }
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,9 +3,9 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,8 +3,9 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,8 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
diff --git a/t/t4211/sha256/expect.multiple b/t/t4211/sha256/expect.multiple
new file mode 100644
index 0000000..ca00409
--- /dev/null
+++ b/t/t4211/sha256/expect.multiple
@@ -0,0 +1,104 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,7 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
++
++/* incomplete lines are bad! */
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,5 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,9 +3,9 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+@@ -17,5 +17,5 @@
+ int main ()
+ {
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,8 +3,9 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,8 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
diff --git a/t/t4211/sha256/expect.multiple-overlapping b/t/t4211/sha256/expect.multiple-overlapping
new file mode 100644
index 0000000..9015a45
--- /dev/null
+++ b/t/t4211/sha256/expect.multiple-overlapping
@@ -0,0 +1,187 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -4,19 +4,21 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * This is only an example!
+  */
+ 
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
++
++/* incomplete lines are bad! */
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -4,19 +4,19 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * This is only an example!
+  */
+ 
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit 5a1b3989063d55e71e7685efa3392f133385b4034bddde530dcb5090d8b8b8ca
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:41 2013 +0100
+
+    touch comment
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,19 +3,19 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+- * A comment.
++ * This is only an example!
+  */
+ 
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,19 +3,19 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+ int main ()
+ {
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,18 +3,19 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+ int main ()
+ {
+ 	printf("%d\n", f(15));
+ 	return 0;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,18 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
++
++/*
++ * A comment.
++ */
++
++int main ()
++{
++	printf("%d\n", f(15));
++	return 0;
++}
diff --git a/t/t4211/sha256/expect.multiple-superset b/t/t4211/sha256/expect.multiple-superset
new file mode 100644
index 0000000..9015a45
--- /dev/null
+++ b/t/t4211/sha256/expect.multiple-superset
@@ -0,0 +1,187 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -4,19 +4,21 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * This is only an example!
+  */
+ 
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
++
++/* incomplete lines are bad! */
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -4,19 +4,19 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * This is only an example!
+  */
+ 
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit 5a1b3989063d55e71e7685efa3392f133385b4034bddde530dcb5090d8b8b8ca
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:41 2013 +0100
+
+    touch comment
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,19 +3,19 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+- * A comment.
++ * This is only an example!
+  */
+ 
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,19 +3,19 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+ int main ()
+ {
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,18 +3,19 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+ int main ()
+ {
+ 	printf("%d\n", f(15));
+ 	return 0;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,18 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
++
++/*
++ * A comment.
++ */
++
++int main ()
++{
++	printf("%d\n", f(15));
++	return 0;
++}
diff --git a/t/t4211/sha256/expect.parallel-change-f-to-main b/t/t4211/sha256/expect.parallel-change-f-to-main
new file mode 100644
index 0000000..e68f892
--- /dev/null
+++ b/t/t4211/sha256/expect.parallel-change-f-to-main
@@ -0,0 +1,160 @@
+commit 98117c2059b76c36995748fb97b02542aef477fe26379e94c18fd70f7790bc67
+Merge: b511694 4f7a581
+Author: Thomas Rast <trast@inf.ethz.ch>
+Date:   Fri Apr 12 16:16:24 2013 +0200
+
+    Merge across the rename
+
+
+commit 4f7a58195a92c400e28a2354328587f1ff14fb77f5cf894536f17ccbc72931b9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:49:50 2013 +0100
+
+    another simple change
+
+diff --git a/b.c b/b.c
+--- a/b.c
++++ b/b.c
+@@ -4,14 +4,14 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+-		x >>= 1;
++		x /= 2;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * This is only an example!
+  */
+ 
+
+commit b511694f5337663fbd697622993a5f8e1099eca84be4df313f2b3ee94a098b42
+Author: Thomas Rast <trast@inf.ethz.ch>
+Date:   Fri Apr 12 16:15:57 2013 +0200
+
+    change on another line of history while rename happens
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -4,14 +4,14 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+- * This is only an example!
++ * This is only a short example!
+  */
+ 
+
+commit 5a1b3989063d55e71e7685efa3392f133385b4034bddde530dcb5090d8b8b8ca
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:41 2013 +0100
+
+    touch comment
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,14 +3,14 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+- * A comment.
++ * This is only an example!
+  */
+ 
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,14 +3,14 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,13 +3,14 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,13 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
++
++/*
++ * A comment.
++ */
++
diff --git a/t/t4211/sha256/expect.simple-f b/t/t4211/sha256/expect.simple-f
new file mode 100644
index 0000000..65508d7
--- /dev/null
+++ b/t/t4211/sha256/expect.simple-f
@@ -0,0 +1,59 @@
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,9 +3,9 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,8 +3,9 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,8 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
diff --git a/t/t4211/sha256/expect.simple-f-to-main b/t/t4211/sha256/expect.simple-f-to-main
new file mode 100644
index 0000000..77b721c
--- /dev/null
+++ b/t/t4211/sha256/expect.simple-f-to-main
@@ -0,0 +1,100 @@
+commit 5a1b3989063d55e71e7685efa3392f133385b4034bddde530dcb5090d8b8b8ca
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:41 2013 +0100
+
+    touch comment
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,14 +3,14 @@
+ long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+- * A comment.
++ * This is only an example!
+  */
+ 
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,14 +3,14 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,13 +3,14 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+ 
+ /*
+  * A comment.
+  */
+ 
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,13 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
++
++/*
++ * A comment.
++ */
++
diff --git a/t/t4211/sha256/expect.simple-main b/t/t4211/sha256/expect.simple-main
new file mode 100644
index 0000000..d20708c
--- /dev/null
+++ b/t/t4211/sha256/expect.simple-main
@@ -0,0 +1,68 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,5 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,5 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -17,5 +17,5 @@
+ int main ()
+ {
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +16,5 @@
++int main ()
++{
++	printf("%d\n", f(15));
++	return 0;
++}
diff --git a/t/t4211/sha256/expect.simple-main-to-end b/t/t4211/sha256/expect.simple-main-to-end
new file mode 100644
index 0000000..617cdf3
--- /dev/null
+++ b/t/t4211/sha256/expect.simple-main-to-end
@@ -0,0 +1,70 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,7 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
++
++/* incomplete lines are bad! */
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,5 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -17,5 +17,5 @@
+ int main ()
+ {
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +16,5 @@
++int main ()
++{
++	printf("%d\n", f(15));
++	return 0;
++}
diff --git a/t/t4211/sha256/expect.two-ranges b/t/t4211/sha256/expect.two-ranges
new file mode 100644
index 0000000..af57c8b
--- /dev/null
+++ b/t/t4211/sha256/expect.two-ranges
@@ -0,0 +1,102 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,5 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
+\ No newline at end of file
++}
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -18,5 +18,5 @@
+ int main ()
+ {
+ 	printf("%ld\n", f(15));
+ 	return 0;
+-}
++}
+\ No newline at end of file
+
+commit ccf97b9878189c40a981da50b15713bb80a35755326320ec80900caf22ced46f
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:45:16 2013 +0100
+
+    touch both functions
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,9 +3,9 @@
+-int f(int x)
++long f(long x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
+ 	return s;
+ }
+@@ -17,5 +17,5 @@
+ int main ()
+ {
+-	printf("%d\n", f(15));
++	printf("%ld\n", f(15));
+ 	return 0;
+ }
+
+commit f6434acd34260a6c9f61e96d96bf9a323d330561df5b1ca2631104f82026dfed
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:55 2013 +0100
+
+    change f()
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -3,8 +3,9 @@
+ int f(int x)
+ {
+ 	int s = 0;
+ 	while (x) {
+ 		x >>= 1;
+ 		s++;
+ 	}
++	return s;
+ }
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +3,8 @@
++int f(int x)
++{
++	int s = 0;
++	while (x) {
++		x >>= 1;
++		s++;
++	}
++}
diff --git a/t/t4211/sha256/expect.vanishes-early b/t/t4211/sha256/expect.vanishes-early
new file mode 100644
index 0000000..11ec9bd
--- /dev/null
+++ b/t/t4211/sha256/expect.vanishes-early
@@ -0,0 +1,39 @@
+commit 5526ed05c2476b56af8b7be499e8f78bd50f490740733a9ca7e1f55878fa90a9
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:43 2013 +0100
+
+    change back to complete line
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -22,1 +24,1 @@
+-}
+\ No newline at end of file
++/* incomplete lines are bad! */
+
+commit 29f32ac3141c48b22803e5c4127b719917b67d0f8ca8c5248bebfa2a19f7da10
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:48:10 2013 +0100
+
+    change to an incomplete line at end
+
+diff --git a/a.c b/a.c
+--- a/a.c
++++ b/a.c
+@@ -22,1 +22,1 @@
+-}
++}
+\ No newline at end of file
+
+commit 1dd7e9b2b1699324b53b341e728653b913bc192a14dfea168c5b51f2b3d03592
+Author: Thomas Rast <trast@student.ethz.ch>
+Date:   Thu Feb 28 10:44:48 2013 +0100
+
+    initial
+
+diff --git a/a.c b/a.c
+--- /dev/null
++++ b/a.c
+@@ -0,0 +20,1 @@
++}
diff --git a/t/t5302-pack-index.sh b/t/t5302-pack-index.sh
index 91d51b3..ad07f2f 100755
--- a/t/t5302-pack-index.sh
+++ b/t/t5302-pack-index.sh
@@ -6,9 +6,10 @@
 test_description='pack index with 64-bit offsets and object CRC'
 . ./test-lib.sh
 
-test_expect_success \
-    'setup' \
-    'rm -rf .git &&
+test_expect_success 'setup' '
+     test_oid_init &&
+     rawsz=$(test_oid rawsz) &&
+     rm -rf .git &&
      git init &&
      git config pack.threads 1 &&
      i=1 &&
@@ -32,7 +33,8 @@
 	 echo $tree &&
 	 git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
      } >obj-list &&
-     git update-ref HEAD $commit'
+     git update-ref HEAD $commit
+'
 
 test_expect_success \
     'pack-objects with index version 1' \
@@ -157,10 +159,11 @@
      offs_101=$(index_obj_offset 1.idx $sha1_101) &&
      nr_099=$(index_obj_nr 1.idx $sha1_099) &&
      chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
+     recordsz=$((rawsz + 4)) &&
      dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
         if=".git/objects/pack/pack-${pack1}.idx" \
-        skip=$((4 + 256 * 4 + $nr_099 * 24)) \
-        bs=1 count=20 conv=notrunc &&
+        skip=$((4 + 256 * 4 + $nr_099 * recordsz)) \
+        bs=1 count=$rawsz conv=notrunc &&
      git cat-file blob $sha1_101 > file_101_foo1'
 
 test_expect_success \
@@ -200,8 +203,8 @@
      chmod +w ".git/objects/pack/pack-${pack1}.pack" &&
      dd of=".git/objects/pack/pack-${pack1}.pack" seek=$(($offs_101 + 1)) \
         if=".git/objects/pack/pack-${pack1}.idx" \
-        skip=$((8 + 256 * 4 + $nr_099 * 20)) \
-        bs=1 count=20 conv=notrunc &&
+        skip=$((8 + 256 * 4 + $nr_099 * rawsz)) \
+        bs=1 count=$rawsz conv=notrunc &&
      git cat-file blob $sha1_101 > file_101_foo2'
 
 test_expect_success \
@@ -226,7 +229,7 @@
      nr=$(index_obj_nr ".git/objects/pack/pack-${pack1}.idx" $obj) &&
      chmod +w ".git/objects/pack/pack-${pack1}.idx" &&
      printf xxxx | dd of=".git/objects/pack/pack-${pack1}.idx" conv=notrunc \
-        bs=1 count=4 seek=$((8 + 256 * 4 + $(wc -l <obj-list) * 20 + $nr * 4)) &&
+        bs=1 count=4 seek=$((8 + 256 * 4 + $(wc -l <obj-list) * rawsz + $nr * 4)) &&
      ( while read obj
        do git cat-file -p $obj >/dev/null || exit 1
        done <obj-list ) &&
diff --git a/t/t5309-pack-delta-cycles.sh b/t/t5309-pack-delta-cycles.sh
index 6c209ad..55b7876 100755
--- a/t/t5309-pack-delta-cycles.sh
+++ b/t/t5309-pack-delta-cycles.sh
@@ -4,15 +4,9 @@
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-pack.sh
 
-if ! test_have_prereq SHA1
-then
-       skip_all='not using SHA-1 for objects'
-       test_done
-fi
-
 # Two similar-ish objects that we have computed deltas between.
-A=01d7713666f4de822776c7622c10f1b07de280dc
-B=e68fe8129b546b101aee9510c5328e7f21ca1d18
+A=$(test_oid packlib_7_0)
+B=$(test_oid packlib_7_76)
 
 # double-check our hand-constucted packs
 test_expect_success 'index-pack works with a single delta (A->B)' '
diff --git a/t/t5313-pack-bounds-checks.sh b/t/t5313-pack-bounds-checks.sh
index f1708d4..2a4557e 100755
--- a/t/t5313-pack-bounds-checks.sh
+++ b/t/t5313-pack-bounds-checks.sh
@@ -38,16 +38,27 @@
 # for the initial, and another ofs(4*nr) past that for the extended.
 #
 ofs_table () {
-	echo $((4 + 4 + 4*256 + 20*$1 + 4*$1))
+	echo $((4 + 4 + 4*256 + $(test_oid rawsz)*$1 + 4*$1))
 }
 extended_table () {
 	echo $(($(ofs_table "$1") + 4*$1))
 }
 
+test_expect_success 'setup' '
+	test_oid_init &&
+	test_oid_cache <<-EOF
+	oid000 sha1:1485
+	oid000 sha256:4222
+
+	oidfff sha1:74
+	oidfff sha256:1350
+	EOF
+'
+
 test_expect_success 'set up base packfile and variables' '
 	# the hash of this content starts with ff, which
 	# makes some later computations much simpler
-	echo 74 >file &&
+	echo $(test_oid oidfff) >file &&
 	git add file &&
 	git commit -m base &&
 	git repack -ad &&
@@ -140,10 +151,10 @@
 	# an extended table (if the first object were larger than 2^31).
 	#
 	# Note that the value is important here. We want $object as
-	# the second entry in sorted-sha1 order. The sha1 of 1485 starts
+	# the second entry in sorted-hash order. The hash of this object starts
 	# with "000", which sorts before that of $object (which starts
 	# with "fff").
-	second=$(echo 1485 | git hash-object -w --stdin) &&
+	second=$(test_oid oid000 | git hash-object -w --stdin) &&
 	do_pack "$object $second" --index-version=2 &&
 
 	# We have to make extra room for the table, so we cannot
diff --git a/t/t5318-commit-graph.sh b/t/t5318-commit-graph.sh
index 07b3207..9bf920a 100755
--- a/t/t5318-commit-graph.sh
+++ b/t/t5318-commit-graph.sh
@@ -629,7 +629,7 @@
 		empty="$(git mktree </dev/null)" &&
 		cat >broken <<-EOF &&
 		tree $empty
-		parent 0000000000000000000000000000000000000000
+		parent $ZERO_OID
 		author whatever <whatever@example.com> 1234 -0000
 		committer whatever <whatever@example.com> 1234 -0000
 
@@ -650,7 +650,7 @@
 		cd repo &&
 		tree="$(git mktree </dev/null)" &&
 		cat >broken <<-EOF &&
-		parent 0000000000000000000000000000000000000000
+		parent $ZERO_OID
 		author whatever <whatever@example.com> 1234 -0000
 		committer whatever <whatever@example.com> 1234 -0000
 
diff --git a/t/t5321-pack-large-objects.sh b/t/t5321-pack-large-objects.sh
index a75eab8..8a56d98 100755
--- a/t/t5321-pack-large-objects.sh
+++ b/t/t5321-pack-large-objects.sh
@@ -10,8 +10,8 @@
 . "$TEST_DIRECTORY"/lib-pack.sh
 
 # Two similar-ish objects that we have computed deltas between.
-A=01d7713666f4de822776c7622c10f1b07de280dc
-B=e68fe8129b546b101aee9510c5328e7f21ca1d18
+A=$(test_oid packlib_7_0)
+B=$(test_oid packlib_7_76)
 
 test_expect_success 'setup' '
 	clear_packs &&
diff --git a/t/t5515-fetch-merge-logic.sh b/t/t5515-fetch-merge-logic.sh
index a9a7d50..9d6a46f 100755
--- a/t/t5515-fetch-merge-logic.sh
+++ b/t/t5515-fetch-merge-logic.sh
@@ -13,11 +13,55 @@
 
 . ./test-lib.sh
 
+build_script () {
+	script="$1" &&
+	for i in one three_file master master2 one_tree three two two2 three2
+	do
+		echo "s/$(test_oid --hash=sha1 "$i")/$(test_oid "$i")/g" >>"$script"
+	done
+}
+
+convert_expected () {
+	file="$1" &&
+	script="$2" &&
+	sed -f "$script" "$file" >"$file.tmp" &&
+	mv "$file.tmp" "$file"
+}
+
 test_expect_success setup '
 	GIT_AUTHOR_DATE="2006-06-26 00:00:00 +0000" &&
 	GIT_COMMITTER_DATE="2006-06-26 00:00:00 +0000" &&
 	export GIT_AUTHOR_DATE GIT_COMMITTER_DATE &&
 
+	test_oid_cache <<-EOF &&
+	one sha1:8e32a6d901327a23ef831511badce7bf3bf46689
+	one sha256:8739546433ab1ac72ee93088dce611210effee072b2b586ceac6dde43ebec9ce
+
+	three_file sha1:0e3b14047d3ee365f4f2a1b673db059c3972589c
+	three_file sha256:bc4447d50c07497a8bfe6eef817f2364ecca9d471452e43b52756cc1a908bd32
+
+	master sha1:6c9dec2b923228c9ff994c6cfe4ae16c12408dc5
+	master sha256:8521c3072461fcfe8f32d67f95cc6e6b832a2db2fa29769ffc788bce85ebcd75
+
+	one_tree sha1:22feea448b023a2d864ef94b013735af34d238ba
+	one_tree sha256:6e4743f4ef2356b881dda5e91f5c7cdffe870faf350bf7b312f80a20935f5d83
+
+	three sha1:c61a82b60967180544e3c19f819ddbd0c9f89899
+	three sha256:0cc6d1eda617ded715170786e31ba4e2d0185404ec5a3508dd0d73b324860c6a
+
+	two sha1:525b7fb068d59950d185a8779dc957c77eed73ba
+	two sha256:3b21de3440cd38c2a9e9b464adb923f7054949ed4c918e1a0ac4c95cd52774db
+
+	master2 sha1:754b754407bf032e9a2f9d5a9ad05ca79a6b228f
+	master2 sha256:6c7abaea8a6d8ef4d89877e68462758dc6774690fbbbb0e6d7dd57415c9abde0
+
+	two2 sha1:6134ee8f857693b96ff1cc98d3e2fd62b199e5a8
+	two2 sha256:87a2d3ee29c83a3dc7afd41c0606b11f67603120b910a7be7840accdc18344d4
+
+	three2 sha1:0567da4d5edd2ff4bb292a465ba9e64dcad9536b
+	three2 sha256:cceb3e8eca364fa9a0a39a1efbebecacc664af86cbbd8070571f5faeb5f0e8c3
+	EOF
+
 	echo >file original &&
 	git add file &&
 	git commit -a -m One &&
@@ -87,7 +131,8 @@
 		git config branch.br-$remote-octopus.remote $remote &&
 		git config branch.br-$remote-octopus.merge refs/heads/one &&
 		git config --add branch.br-$remote-octopus.merge two
-	done
+	done &&
+	build_script sed_script
 '
 
 # Merge logic depends on branch properties and Pull: or .fetch lines
@@ -138,6 +183,10 @@
 	actual_r="$pfx-refs.$test"
 
 	test_expect_success "$cmd" '
+		cp "$expect_f" expect_f &&
+		convert_expected expect_f sed_script &&
+		cp "$expect_r" expect_r &&
+		convert_expected expect_r sed_script &&
 		{
 			echo "# $cmd"
 			set x $cmd; shift
@@ -153,18 +202,18 @@
 			cat .git/FETCH_HEAD
 		} >"$actual_f" &&
 		git show-ref >"$actual_r" &&
-		if test -f "$expect_f"
+		if test -f "expect_f"
 		then
-			test_cmp "$expect_f" "$actual_f" &&
+			test_cmp "expect_f" "$actual_f" &&
 			rm -f "$actual_f"
 		else
 			# this is to help developing new tests.
 			cp "$actual_f" "$expect_f"
 			false
 		fi &&
-		if test -f "$expect_r"
+		if test -f "expect_r"
 		then
-			test_cmp "$expect_r" "$actual_r" &&
+			test_cmp "expect_r" "$actual_r" &&
 			rm -f "$actual_r"
 		else
 			# this is to help developing new tests.
diff --git a/t/t5607-clone-bundle.sh b/t/t5607-clone-bundle.sh
index b7a3fdf..9108ff6 100755
--- a/t/t5607-clone-bundle.sh
+++ b/t/t5607-clone-bundle.sh
@@ -64,7 +64,7 @@
 	test -s heads &&
 	git fetch long-subject-bundle.bdl &&
 	sed -n "/^-/{p;q;}" long-subject-bundle.bdl >boundary &&
-	grep "^-[0-9a-f]\\{40\\} " boundary
+	grep "^-$OID_REGEX " boundary
 '
 
 test_expect_success 'prerequisites with an empty commit message' '
diff --git a/t/t5703-upload-pack-ref-in-want.sh b/t/t5703-upload-pack-ref-in-want.sh
index 1424fab..8aeeaac 100755
--- a/t/t5703-upload-pack-ref-in-want.sh
+++ b/t/t5703-upload-pack-ref-in-want.sh
@@ -19,7 +19,7 @@
 		}' <out | test-tool pkt-line unpack-sideband >o.pack &&
 	git index-pack o.pack &&
 	git verify-pack -v o.idx >objs &&
-	grep commit objs | cut -c-40 | sort >actual_commits
+	grep commit objs | cut -d" " -f1 | sort >actual_commits
 }
 
 check_output () {
@@ -37,6 +37,7 @@
 #             \ | /
 #               a
 test_expect_success 'setup repository' '
+	test_oid_init &&
 	test_commit a &&
 	git checkout -b o/foo &&
 	test_commit b &&
@@ -333,7 +334,7 @@
 	git -C "$REPO" config uploadpack.allowRefInWant false &&
 	rm -rf local &&
 	cp -r "$LOCAL_PRISTINE" local &&
-	inconsistency master 1234567890123456789012345678901234567890 &&
+	inconsistency master $(test_oid numeric) &&
 	test_must_fail git -C local fetch 2>err &&
 	test_i18ngrep "fatal: remote error: upload-pack: not our ref" err
 '
@@ -342,7 +343,7 @@
 	git -C "$REPO" config uploadpack.allowRefInWant true &&
 	rm -rf local &&
 	cp -r "$LOCAL_PRISTINE" local &&
-	inconsistency master 1234567890123456789012345678901234567890 &&
+	inconsistency master $(test_oid numeric) &&
 	git -C local fetch &&
 
 	git -C "$REPO" rev-parse --verify master >expected &&
diff --git a/t/t6000-rev-list-misc.sh b/t/t6000-rev-list-misc.sh
index b8cf823..a0baf9e 100755
--- a/t/t6000-rev-list-misc.sh
+++ b/t/t6000-rev-list-misc.sh
@@ -104,13 +104,16 @@
 	#   - we do not show the root tree; since we updated the index, it
 	#     does not have a valid cache tree
 	#
-	cat >expect <<-\EOF &&
-	8e4020bb5a8d8c873b25de15933e75cc0fc275df one
-	d9d3a7417b9605cfd88ee6306b28dadc29e6ab08 only-in-index
-	9200b628cf9dc883a85a7abc8d6e6730baee589c two
-	EOF
 	echo only-in-index >only-in-index &&
 	test_when_finished "git reset --hard" &&
+	rev1=$(git rev-parse HEAD:one) &&
+	rev2=$(git rev-parse HEAD:two) &&
+	revi=$(git hash-object only-in-index) &&
+	cat >expect <<-EOF &&
+	$rev1 one
+	$revi only-in-index
+	$rev2 two
+	EOF
 	git add only-in-index &&
 	git rev-list --objects --indexed-objects >actual &&
 	test_cmp expect actual
diff --git a/t/t6006-rev-list-format.sh b/t/t6006-rev-list-format.sh
index ebdc49c..7e82e43 100755
--- a/t/t6006-rev-list-format.sh
+++ b/t/t6006-rev-list-format.sh
@@ -32,6 +32,7 @@
 truncate_count=20
 
 test_expect_success 'setup' '
+	test_oid_init &&
 	: >foo &&
 	git add foo &&
 	git config i18n.commitEncoding $test_encoding &&
@@ -463,9 +464,10 @@
 '
 
 test_expect_success '%H is not affected by --abbrev-commit' '
+	expected=$(($(test_oid hexsz) + 1)) &&
 	git log -1 --format=%H --abbrev-commit --abbrev=20 HEAD >actual &&
 	len=$(wc -c <actual) &&
-	test $len = 41
+	test $len = $expected
 '
 
 test_expect_success '%h is not affected by --abbrev-commit' '
diff --git a/t/t6024-recursive-merge.sh b/t/t6024-recursive-merge.sh
index 0c9e3c2..332cfc5 100755
--- a/t/t6024-recursive-merge.sh
+++ b/t/t6024-recursive-merge.sh
@@ -57,7 +57,12 @@
 	git rev-parse C >.git/MERGE_HEAD &&
 	echo F >a1 &&
 	git update-index a1 &&
-	GIT_AUTHOR_DATE="2006-12-12 23:00:08" git commit -m F
+	GIT_AUTHOR_DATE="2006-12-12 23:00:08" git commit -m F &&
+
+	test_oid_cache <<-EOF
+	idxstage1 sha1:ec3fe2a791706733f2d8fa7ad45d9a9672031f5e
+	idxstage1 sha256:b3c8488929903aaebdeb22270cb6d36e5b8724b01ae0d4da24632f158c99676f
+	EOF
 '
 
 test_expect_success 'combined merge conflicts' '
@@ -79,10 +84,10 @@
 test_expect_success 'virtual trees were processed' '
 	git ls-files --stage >out &&
 
-	cat >expect <<-\EOF &&
-	100644 ec3fe2a791706733f2d8fa7ad45d9a9672031f5e 1	a1
-	100644 cf84443e49e1b366fac938711ddf4be2d4d1d9e9 2	a1
-	100644 fd7923529855d0b274795ae3349c5e0438333979 3	a1
+	cat >expect <<-EOF &&
+	100644 $(test_oid idxstage1) 1	a1
+	100644 $(git rev-parse F:a1) 2	a1
+	100644 $(git rev-parse G:a1) 3	a1
 	EOF
 
 	test_cmp expect out