过年来发现github备份无法使用

动作因为这个报错卡住了，没能走向输密码的流程

ssh: connect to host github.com port 22: Connection timed out fatal: Could not read from remote repository.

Please make sure you have the correct access rights and the repository exists.

我最近在别人那里见到过一次这样的问题，你可以尝试下这个链接中修复方法

https://stackoverflow.com/questions/15589682/how-to-fix-ssh-connect-to-host-github-com-port-22-connection-timed-out-for-g