我也有同样的问题。

我解决了把我的gitlab用户名前缀到gitlab.com url的问题，就像这样: 之前: https://gitlab.com/my_gitlab_user/myrepo.git 后: https://my_gitlab_user@gitlab.com/my_gitlab_user/myrepo.git 在这种情况下，将再次要求凭据，这就完成了!

Normally it happens because the project is private and you have not rights to write it. I had the same "problem" a few times, and it was for that reason. If the project it is yours, just create a private and a public key following this link: https://docs.github.com/en/github/authenticating-to-github/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent and add them to the "SSH and Key" section on gitHub, then you will be able to push to the repo. In the other hand if the project it is not your, ask the owner to give you the rights for it.

如果你的repo之前工作正常，突然弹出这个错误，最有可能的原因是你的git被认证为其他用户，没有访问存储库的权限。因此，为了进行推送，您所需要做的就是在git命令中指定正确的用户名和密码。所以，一个github回购的推命令看起来像:

git push https://youruser:password@github.com/user/reponame.git

用户名和密码需要进行url转义，因此@应该被%40取代，等等。

在执行此操作之前，请确保您拥有对回购的写权限。如果您仍然得到错误，请执行以下操作:

Generate a personal access token from your account from Settings > Developer Settings > Personal Access tokens. Keep the token safe somewhere. Go to your repository and run the following: git remote rm origin Then add a new origin along with your username: git remote add origin https://USERNAME@github.com/REPOSITORY_LINK.git Now when you push the code, a prompt will show up asking for your password or personal access token. Paste the token that we generated in the first step in the field, and we're done.

这也可能发生，因为GitHub本身宕机了。一定要检查stat.github.com，看看问题是否在他们那边。

2018年10月22日，你有好几个小时都无法推送到GitHub。

我在一台MAC上遇到了同样的问题，试图从我以前连接到的一个私人回购中提取。

我通过在回购url中包含我的用户名来解决这个问题:

git remote set-url origin https://<YOUR_USER_NAME_HERE>@github.com/<YOUR_USER_NAME_HERE>/<REPO>.git

然后我从回购中提取了数据。

对于一个你想克隆的新回购:

git clone https://<YOUR_USER_NAME_HERE>@github.com/<YOUR_USER_NAME_HERE>/<REPO>.git    

它会提示你输入那个账户的密码，然后你就可以去了。