Credential-Manager only works for github if the User name in Windows Credential is everything but the actual github user name

Version

2.5.0+d34930736e131ad80e5690e5634ced1808aff3e2

Operating system

Windows

OS version or distribution

10 Pro 19045.4412

Git hosting provider(s)

GitHub

Other hosting provider

No response

(Azure DevOps only) What format is your remote URL?

None

Can you access the remote repository directly in the browser?

Yes, I can access the repository

Expected behavior

After installing git for windows on the machine I did a first git clone . This asked me for Authentication via git-credential-manager and stored the credentials in the Windows Credentials.

The next time I did a git fetch (or any other git command that requires authentication) I expected the stored credentials to be used. Especially I expect my actual git User Name to be required.

Actual behavior

I get a git-credential-manager popup every time I interact with github via a git command that requires to be authenticated

Then I found https://github.com/git-ecosystem/git-credential-manager/issues/1555#issuecomment-2148567509

And indeed, changing the User Name in Windows Credentials to "1" lets me run i.e. git pull without getting the git-credential-manager popup

Actually, it seems I can set the User Name to anything as long as it is not my real github username.

Logs

No response

No source files or tests are named. Start by reproducing the GitHub authentication flow on Windows 10 with Git Credential Manager 2.5.0, then inspect how Windows Credential Manager handles the stored username. Done means authenticated GitHub commands reuse the credential without a popup while the actual GitHub username remains valid.