使用Ubuntu时，我总是需要使用SSH而不是HTTPS添加远程

git remote add origin git@github.com:username/project.git

而不是

git remote add origin https://github.com/username/project.git

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.

我需要杀死凭证帮助进程(有多个)，它在再次提供凭证后解决了这个问题。

killall git-credential-cache——守护进程

这解决了我的问题。

   git pull https://myusername:mypassword@github.com/path_to/myRepo.git

转到你的项目文件夹，然后搜索。git文件夹，然后用记事本打开配置文件，检查是否有你的链接到github回购下:[remote "origin"]，如果它是不同的，然后在你的github回购，然后编辑它，或在配置文件中打开一个新的回购名称

如果你在Windows上使用Git，试着清除你的凭证:

找到“凭据管理器”(应该在控制面板中) 删除所有与GitHub相关的凭证