问题：
git推送到远程仓库发生错误
执行命令：
git push origin dev
发生错误：
ssh: connect to host github.com port 22: Operation timed out fatal: Could not read from remote repository. Please make sure you have the correct access rights and the repository exists.
问题判断：
1、首先输入以下命令检查SSH是否能够连接成功
ssh -T [email protected]
发现报错：端口连接超时
ssh: connect to host github.com port 22: Operation timed out
解决方案：
找到.ssh文件夹，Mac中路径是 ~/.ssh，新建一个config文件，不带后缀
touch config
然后打开config文件，添加下列代码，注意User后面的邮箱改为你的邮箱
Host github.com User [email protected] Hostname ssh.github.com PreferredAuthentications publickey IdentityFile ~/.ssh/id_rsa Port 443
再次执行下面代码
ssh -T [email protected]
会显示下面提示
The authenticity of host '[ssh.github.com]:443 ([20.200.200.100]:443)' can't be established. ECDSA key fingerprint is SHA256:XXXXXXXX/XXXXXX/XXXXXXX. Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Warning: Permanently added '[ssh.github.com]:443,[20.200.200.100]:443' (ECDSA) to the list of known hosts.
再次执行
ssh -T [email protected]
此时回应下面消息，说明成功了
Hi xxx! You've successfully authenticated, but GitHub does not provide shell access.
接下来就可以正常推送代码了
标签：github,remote,repository,443,host,git,ssh,com From： https://www.cnblogs.com/paris-dream/p/17972173