How to hide/isolate branches in Git?

Question

git

Hello!
I have a git controlled project. The master branch contains files with standard settings. The test branch contains a customized version with all logins and passwords.
How to make it so that when cloning a repository, only one master branch is cloned, and the rest of the branches are not even visible?

Answer 1

storing logins with passwords in a repository is like going to a gay bar with a bare ass.
delete, write to .gitignore, and don't do it again.

Answer 2

Only if you do not push this branch, otherwise nothing.
Or push it to some other repository to which no one has access, but this is already some kind of nonsense.