base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
die "not a TopGit-controlled branch"
if [ -n "$in_reply_to" ]; then
base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
die "not a TopGit-controlled branch"
if [ -n "$in_reply_to" ]; then