I want to logout from Git bash and login it again as another user .
I have googled but can\'t find any solution.
You don't have to "logout" or "login": regarding git, who you are is determined by:
git config user.name
git config user.email
Change those two settings while being in a repo, and you are someone else, when it comes to creating commits.
That has nothing to do with git remote -v, that is with the user account you will use to push to the upstream repo.