I was trying to clone a repo and was facing this issue, I tried removing all git related credentials from windows credentials manager after that while trying to clone git was asking me for my credentials and failing with error invalid username or password. This was happening because the repo I was trying to clone was under an organization on github and that organization had two factor auth enabled and git bash probably do not know how to handle 2fa. So I generated a token from https://github.com/settings/tokens and used the github token instead of password while trying to clone the repo and that worked.

有时ssh凭证是安装在你的电脑上与github回购通信。 当你设置新的repo:如果你添加了https格式的origin，你的git凭证管理器不能找出repo。

检查产地格式

git remote -v

https格式的来源

origin  https://github.com/username/repo_name.git

ssh格式的原点

origin git@github.com:username/repo_name.git

删除https格式的origin

git remote remove origin

添加ssh格式的origin

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

对于Mac

打开KeyChain访问，并在密码类别上找到您的密码帐户(您可以在右上角KeyChain访问页面上搜索它)

当你找到它时，删除所有与git源代码控制相关的键。再试一次

因为您可能没有首先将远程git存储库标识到您的终端。

git remote set-url origin https://github.com/MyRepo/project.git

然后,

git add .
git commit -m "initial commit"
git push origin master

我有同样的问题，并发现我在~/中有另一个密钥文件。ssh到不同的GitHub存储库。不知怎么的，它代替了新的。

这里的问题是windows凭据管理器，请去控制面板，搜索凭据管理器，并删除它关于github的所有内容