Pre-merge trigger?

Is there a way to trigger a GitHub action to validate a merge, or more specifically to intercept the merge request for validation?

I see several actions on the marketplace for validating semantic-release based on the PR title, but this and the description can be overridden in the final merge options.

The use case would be to validate semantic-release merge commit title but also for verifying the proper BREAKING CHANGES are defined in the final merge description.

Thanks! :pray: