overcommit: Overcommit --sign not working

Here’s what I do on my terminal

> Cyril$ overcommit --sign
Updating signature for configuration file...
> Cyril$ git commit -m "overcommit stuff"
Unable to load configuration from '/[...]/.overcommit.yml': Signature of configuration file has changed!
Run `overcommit --sign` once you've verified the configuration changes.

This happened first after I tried to checkout a branch/commit long before I had added overcommit.

I have tried to

• Update overcommit
• Add comments in the overcommit.yml file
• Add instructions to the overcommit.yaml file

The only fix I found thanks to a previous issue, was to remove the overcommit file, but the I’m having a lot of pain trying to merge/rebase branches