https://blog.wongcw.com/2020/01/06/linux%e5%85%a7%e6%a0%b8%e9%96%8b%e7%99%bc%e8%80%85%e4%ba%ba%e6%95%b8%e5%92%8ccommits-%e6%95%b8%e9%81%8e%e5%8e%bb%e4%b8%80%e5%b9%b4%e5%87%ba%e7%8f%be%e4%b8%8b%e9%99%8d/