apply: Fix addition of 'need commit message' string

Fix a double addition of the commit message, and add a comment
pointing out that the exact string is checked by git.gnome.org.

1 files changed, 2 insertions, 1 deletions

diff --git a/git-bz b/git-bz
index bba5de5..065d290 100755
--- a/git-bz
+++ b/git-bz
@@ -1658,7 +1658,8 @@ From: %s <%s>
 Date: %s
 Subject: %s
 """ % (name, email, patch.date, patch.description)
-            patch.data = headers + "\n\nFIXME: need commit message\n---\n" + patch.data
+            # The exact string 'FIXME: need commit message' is checked for by
+            # git.gnome.org commit hooks, so they need to be updated if it changes.
             patch.data = headers + """
 
 FIXME: need commit message.