fatal: Authentication failed for 'http://git

git pull 出現 fatal: Authentication failed for 'http://git...

git config --system --unset credential.helper

error: could not lock config file C:/Program Files/Git/mingw64/etc/gitconfig: Permission denied

在 windows cmd 中執行 git config --system --unset credential.helper

之后就會出現 git 輸入用戶名密碼的彈框，就 OK 了