$ git format-patch --stdout initial..side
From c7a2ab9e8eac7b117442a607d5a9b3950ae34d5a Mon Sep 17 00:00:00 2001
From: A U Thor <author@example.com>
Date: Mon, 26 Jun 2006 00:03:00 +0000
Subject: [PATCH] Side

---
 dir/sub |    2 ++
 file0   |    3 +++
 file3   |    4 ++++
 3 files changed, 9 insertions(+), 0 deletions(-)
 create mode 100644 file3

diff --git a/dir/sub b/dir/sub
index 35d242b..7289e35 100644
--- a/dir/sub
+++ b/dir/sub
@@ -1,2 +1,4 @@
 A
 B
+1
+2
diff --git a/file0 b/file0
index 01e79c3..f4615da 100644
--- a/file0
+++ b/file0
@@ -1,3 +1,6 @@
 1
 2
 3
+A
+B
+C
diff --git a/file3 b/file3
new file mode 100644
index 0000000..7289e35
--- /dev/null
+++ b/file3
@@ -0,0 +1,4 @@
+A
+B
+1
+2
-- 
g-i-t--v-e-r-s-i-o-n

$