3 . git-sh-setup-script || die
"Not a git archive"
6 rev=$
(git-rev-parse
--verify --default HEAD
"$2"^
0) ||
exit
8 [ -z "$branchname" ] && die
"git branch: I want a branch name"
9 [ -e "$GIT_DIR/refs/heads/$branchname" ] && die
"$branchname already exists"
11 echo $rev > "$GIT_DIR/refs/heads/$branchname"