新生成密钥的时候，测试密钥配置是否成功，进行下面测试：

tssh@DESKTOP-9LP9IL5 MINGW64 ~/.ssh
$ ssh git@github.com
The authenticity of host 'github.com (192.30.255.112)' can't be established.
RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.

Google之后明白，少了一个known_hosts文件，本来密钥文件应该是三个，现在是两个，

便报了这样的错误，此时选择yes回车之后，便可，同时生成了缺少了的known_hosts文件：
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'github.com,192.30.255.112' (RSA) to the list of known hosts.
PTY allocation request failed on channel 0
Hi sworsman31415926! You've successfully authenticated, but GitHub does not provide shell access.
Connection to github.com closed.

自己再次执行下就可以了。

tssh@DESKTOP-9LP9IL5 MINGW64 ~/.ssh
$ ssh git@github.com
PTY allocation request failed on channel 0
Hi sworsman31415926! You've successfully authenticated, but GitHub does not provide shell access.
Connection to github.com closed.

test ok