改用 git rebase pull 以后意识到一个大问题：处理冲突的操作没有记录，过程不可逆！得加个钩子把每次 rebase 之前的 hash 保存下来以方便读档。
Why is this step necessary? hello.2heng.xin might not be the server where you are registered, so we need to redirect you to your home server first. Don't have an account? You can sign up here
hello.2heng.xin
