USAGE='<upstream> [<head>]'
. git-sh-setup
+case $# in 1|2) ;; *) usage ;; esac
+
# Make sure we do not have .dotest
if mkdir .dotest
then
# If the branch to rebase is given, first switch to it.
case "$#" in
2)
+ head=$(git-rev-parse --verify "$2^") || usage
git-checkout "$2" || usage
esac