diff --git a/Documentation/RelNotes/2.28.0.txt b/Documentation/RelNotes/2.28.0.txt
index 542a139..934f5e6 100644
--- a/Documentation/RelNotes/2.28.0.txt
+++ b/Documentation/RelNotes/2.28.0.txt
@@ -118,6 +118,14 @@
 
  * The effort to avoid using test_must_fail on non-git command continues.
 
+ * In 2.28-rc0, we corrected a bug that some repository extensions are
+   honored by mistake even in a version 0 repositories (these
+   configuration variables in extensions.* namespace were supposed to
+   have special meaning in repositories whose version numbers are 1 or
+   higher), but this was a bit too big a change.  The behaviour in
+   recent versions of Git where certaion extensions.* were honored by
+   mistake even in version 0 repositories has been restored.
+
 
 Fixes since v2.27
 -----------------
diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 7b0cfeb..2b7babb 100755
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.27.GIT
+DEF_VER=v2.28-rc1
 
 LF='
 '