fatal: unable to access 'https://gitee.com/...': Could not resolve host: gitee.com

把https模式换成ssh

用git remote -v查看使用的是https还是ssh等
$ git remote -v
> origin https://github.com/USERNAME/REPOSITORY.git (fetch)
> origin https://github.com/USERNAME/REPOSITORY.git (push)

使用git remote set-url命令将远程URL从HTTPS更改为SSH

$ git remote set-url origin git@github.com:USERNAME/REPOSITORY.git

然后进行推送等操作吧

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原文地址：https://www.cnblogs.com/YLJ666/p/14075541.html