这里不是仅仅把git的登陆shell改成git-shell就可以了……这样你用ssh登陆上去会打印

fatal: Interactive git shell is not enabled.
hint: ~/git-shell-commands should exist and have read and execute access.

不能正常的使用git-shell的功能，这是官网的指示，应该手动建立~/git-shell-commands/no-interactive-login文件

以git登陆后

$ chsh -s /usr/bin/git-shell
$ mkdir $HOME/git-shell-commands
$ cat >$HOME/git-shell-commands/no-interactive-login <<\EOF
#!/bin/sh
printf '%s\n' "Hi $USER! You've successfully authenticated, but I do not"
printf '%s\n' "provide interactive shell access."
exit 128
EOF
$ chmod +x $HOME/git-shell-commands/no-interactive-login

第一句是改变登陆shell，不过我在树莓派上测试了发现会提示git-shell不合法，那就手动改/etc/passwd