git pushed with another account to my other account?

Question

I created a new GitHub account and did a git push --setup-upstream origin after I added my origin branch.

After deleting my old GitHub credentials under Credential Manager in Windows, it seemed to be working fine, was getting the GitHub-sign-in window from Visual Studio Code to sign in and used new account credentials.

Once I did git push to push my project upstream, my GitHub now tells me my old account had pushed the project into my new account's branch...

How is that possible? I don't have any SSH or other tokens assigned from my old account so that is the confusing part.

I also can't seem to find a solution to "log out" or get rid of my old GitHub from upstreaming this to my new account. Is there something I am missing?

Answer 1

Do not mix-up what you see beside commits on GitHub with the one actually pushing those commits.

You can check which credentials (username/password) is used for pushing to GitHub with (assuming latest Git 2.30+, and git config credential-manager set to manager-core) with:

printf "protocol=https\nhost=github.com"|git credential-manager-core get

This differ from git config user.name/email, which is why I always set (since Git 2.8, March 2016)

git config --global user.useconfigonly true

That forces me to specify the right user.name/email at the first commit in each new repository.