Gitlab is rewriting config file under each repository folder

I recently upgraded our gitlab instance from version 12.7.5 to Gitlab 15. All good after the upgrade, but after a couple of days I noticed that gitlab is changing the main git configuration files with his own content changing some settings that I need to have there.

I understand this is a scheduled process by gitlab related with housekeeping, but from my point of view Gitlab should not change those files.

It is always happening at the same time (12:00 UTC)

# Path where my config file is located
$ pwd
# Modification date of the file
$ ls -lhart config 
-rw------- 1 git root 244 Aug 10 12:02 config

I need those config files to be pointing to a different git based service (not gitlab) as mirror, this is the usual config I have there:

[remote "origin"]
        url = ssh://my-git-mirror/repository-name.git
        fetch = +refs/heads/*:refs/remotes/origin/*

Does someone know how to disable this process? Or how to deal with this?

Thank you.

After some research and attempts, I’ve decided to create a script under crontab that overwrite the config file content with my requirements. I’ve tried to disable housekeeping at gitlab settings but it didn’t changed anything. Hopefully someone provide a better solution (maybe configuration change) that could prevent this happening…