It may be that your password to connect to git has been changed, but not the local configuration. However, Git doesn’t have pop-up boxes that prompt you to change your username and password.
Then you can do the following:
1. Open git bash here
Git config –system –unset credential. Helper
3. Then do anything like push, pull, or clone
4, You are prompted to enter the user name and password, change it
Git config –global credential. Helper store
6. Execute 3 again and enter the username and password
7, OK.