#!/bin/bash -e

if [[ $# -lt 1 ]]; then
	(
		echo "Usage:"
		echo "	$0 <commit-id>"
	) >&2
	exit 2
fi

COMMIT_ID="$1"
shift

COMMIT_ID="$(git rev-parse "$COMMIT_ID")"
exitcode=$?
if [[ $exitcode -ne 0 ]]; then
	echo >&2 "Invalid ref \"$COMMIT_ID\""
	exit 1
fi

exec git commit -m "fixup! $COMMIT_ID" "$@"