$ git push ssh: connect to host github.com port 22: Connection timed out fatal: Could not read from

之前都好好的，今天git push突然出现这个问题

解决方法一：改用HTTP协议（我没试过，应该是可以的）

• 就是把远程库地址改成HTTP协议的，好像是这个命令，自己搜一下
  git remote set-url origin https://[email protected]/username/repository.git

解决方法二：更改SSH端口（亲测可用）

• 先试试这个命令 ssh -T -p 443 [email protected]
• 此时出现如下提示信息

  The authenticity of host '[ssh.github.com]:443 ([20.205.243.160]:443)' can't be established.
  ED25519 key fingerprint is SHA256:+DiY3wvvV6TuJJhbpZisF/zLDA0zPMSvHdkr4UvCOqU.
  This host key is known by the following other names/addresses:
      ~/.ssh/known_hosts:1: github.com
  Are you sure you want to continue connecting (yes/no/[fingerprint])? 
  

• 输入yes，然后如果出现下面这个提示Hi 你的github用户名，则443端口连接成功

  Warning: Permanently added '[ssh.github.com]:443' (ED25519) to the list of known hosts.
  Hi youname! You've successfully authenticated, but GitHub does not provide shell access.
  

• 在C:\Users\your-username\.ssh\目录下创建config文件，输入

  Host github.com
    HostName ssh.github.com
    Port 443
  

• git push 或者git pull 应该就成功了