https://www.hiroom2.com/2015/07/04/redmine%E3%81%A8git%E3%81%AE%E9%80%A3%E6%90%BA%E3%81%ABgit-hooks%E3%82%92%E4%BD%BF%E3%81%A3%E3%81%A6%E3%81%BF%E3%82%8B/