Unlink project and repo

I’m posting here because I would like to to unlink my site “dhg-preprod” from his current repo.
I’d be grateful if you could help me with that.
I saw on the following topic that it can’t be done from the admin panel nor the netlify CLI: Change Netlify site repo URL with self-hosted GitLab project

Thanks in advance,
Best regards,
F. Revol

Hi, and welcome to our Netlify community site.

We have sent you an email about this transfer. We’ll complete the process using that email for communication.

Also, please let us know with a reply here if you don’t receive it.