Git 怎么设置才能连接 Github ，在开启二次验证后？

在 Github 试了下二次验证，然后 Git 就罢工了，没找到解决方法，来请教一下。

一、git push 时：
remote: Invalid username or password.

二、ssh -T 了一下：
$ ssh -T [email protected]
The authenticity of host 'github.com (192.30.252.130)' can't be established.
RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48.
Are you sure you want to continue connecting (yes/no)? y
Please type 'yes' or 'no': yes
Warning: Permanently added 'github.com,192.30.252.130' (RSA) to the list of know
n hosts.
Permission denied (publickey).

目前关闭二验后，正常使用。