[Request] Create branches matching revisions specified in releases of other privacy sandbox repositories

[DomAyre]

As part of adding Azure support, would like to be able to take a specific release version of repositories which have a dependency on this code (such as bidding-auction-servers) and develop against the corresponding revision here.

However since that specific revision doesn't have a branch, we can't create PRs across both repositories which match a full system. This also applies to the key value service and inference sidecar (and potentially other places)