2 . git-sh-setup-script || die "Not a git archive"
4 old=$(git-rev-parse HEAD)
8 while [ "$#" != "0" ]; do
16 rev=$(git-rev-parse --verify --revs-only "$arg")
17 if [ -z "$rev" ]; then
18 echo "unknown flag $arg"
22 echo "Multiple revisions?"
26 if [ -f "$GIT_DIR/refs/heads/$arg" ]; then
33 [ -z "$new" ] && new=$old
37 git-read-tree --reset $new &&
38 git-checkout-cache -q -f -u -a
40 git-read-tree -m -u $old $new
44 # Switch the HEAD pointer to the new branch if it we
45 # checked out a branch head, and remove any potential
46 # old MERGE_HEAD's (subsequent commits will clearly not
47 # be based on them, since we re-set the index)
49 if [ "$?" -eq 0 ]; then
50 [ "$branch" ] && ln -sf "refs/heads/$branch" "$GIT_DIR/HEAD"
51 rm -f "$GIT_DIR/MERGE_HEAD"