The first thing you may want to confirm is the internet connection. Though, internet issues mostly will say that the repo cannot be accessed. Ensure you have set up ssh both locally and on your github. See how Ensure you are using the ssh git remote. If you had cloned the https, just set the url to the ssh url, with this git command git remote set-url origin git@github.com:your-username/your-repo-name.git If you have set up ssh properly but it just stopped working, do the following: eval "$(ssh-agent -s)" ssh-add If you are still having the issue, check to ensure that you have not deleted the ssh from your github. In a case where the ssh has been deleted from github, you can add it back. Use pbcopy < ~/.ssh/id_rsa.pub to copy the ssh key and then go to your github ssh setting and add it.

我建议你总是使用ssh。对于我合作过的大多数团队来说，除非使用ssh，否则您无法访问回购(大多数是私有的)。对于初学者来说，这可能看起来很难，但后来你会发现它更容易和更安全。

如果您使用的是共享机器，那么使用自己的密码或无密码私钥可能会有些过分。更安全的选项是访问令牌:

进入设置，开发人员设置，个人访问令牌 生成新的令牌。 注意标记的用途。 授予回购权限。 克隆回购:

$ git clone https://<token>@github.com/<user>/<repo>.git

如果你已经克隆了repo，你可以修改你的远程设置:

$ git remote set-url origin https://<token>@github.com/<user>/<repo>.git
$ git pull
Already up to date.

将这些行添加到你的.get/config文件中(感谢@kovshenin回答Git Pull: Change Authentication):

[credential]
    helper = wincred

你的git URL可能已经改变了。使用如下命令修改本地目录下的URL

对于HTTPS协议

git remote set-url origin https://github.com/username/repository.git

对于SSH协议

git remote set-url origin git@github.com:username/repository.git

这个问题可能有多种原因

如果问题与您的ssh身份有关，请在这里通过@onkar-m18回答 如果ssh密钥没有添加到主机服务器，请在这里通过@lovekush-vishwakarma回答

我的情况: 我使用Windows，我有一个以上的用户帐户。 我收到同样的错误，修复是启动git bash与管理员权限。

这个问题可能与您的ssh-agent有关，您的ssh密钥没有与ssh-agent一起添加。您必须在您的终端上执行以下步骤:-

$ eval "$(ssh-agent -s)" Agent pid 5867 $ ssh-add <private-ssh-key-file-name> // eg。Id_rsa(不是.pub) 为/home/you/输入密码。ssh / id_rsa: [] 标识添加:/home/you/。ssh / id_rsa (/ home /你/ . ssh / id_rsa)