This seems like it would work, but requires a centralized point to enforce it. Otherwise, it seems that you could trigger a "split brain" scenario where in one

This seems like it would work, but requires a centralized point to enforce it. Otherwise, it seems that you could trigger a "split brain" scenario where in one repo a key is revoked by a malicious user, and in another the malicious user's key is revoked (or development continues). Which lineage is correct?