[PATCH] git-clone-pack: do not silently overwrite an existing branch 'origin'

When cloning a repository which already contains a branch called 'origin',
do not silently overwrite it with the remote 'master' ref.

Signed-off-by: Johannes Schindelin <redacted>

---

	This happened to me with a project I track via git-cvsimport.
	The clone strangely suffered a time warp ;-)

 git-clone.sh |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

f0d4ef72573488410a1e8eb0198e347630d6e2c9

diff --git a/git-clone.sh b/git-clone.sh
index 280cc2e..e988964 100755
--- a/git-clone.sh
+++ b/git-clone.sh

@@ -204,6 +204,10 @@ then
 	head_points_at=`git-symbolic-ref HEAD`
 	case "$head_points_at" in
 	refs/heads/*)
+		if test -e .git/refs/heads/origin; then
+			chmod a-w .git/refs/heads/origin
+			echo "Warning: branch 'origin' exists already"
+		fi
 		head_points_at=`expr "$head_points_at" : 'refs/heads/\(.*\)'`
 		mkdir -p .git/remotes &&
 		echo >.git/remotes/origin \

-- 
1.0.0