git一些概念

1. git中的HEAD、head和master
   https://juejin.cn/post/6844903493078089736

2. git中refs/for/mybranch 和 refs/heads/mybranch
   https://blog.csdn.net/qq_31411389/article/details/77045719
   简单点说，就是refs/for/mybranch需要经过code review之后才可以提交；refs/heads/mybranch不需要code review。

Gerrit 下需要这样提交：$git push origin HEAD:refs/for/mybranch

https://blog.csdn.net/qq_31411389/article/details/77045719