No option to generate new deploy key

[oerp-odoo]

So old bot user access got lost that was connected with docker hub. It was using deploy key (public key) provided here:

The problem now is that I can't use that deploy key anymore, because it is already used up on user I can't access. Github says such key is already used.

But I dont see a way to generate new deploy key. To me this looks like insecure behavior by docker hub. What if key in use was compromised, why can't I drop that key and get new one?..

I tried deleting repository, and creating new. Yet when new repo is created I still see same key..:)