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> 2. For stable branches, the process is a bit different. For those
> branches, we don't generally want to introduce changes that are not
> related to specific issues in a project. So in case of backports, we
> tend to do per-patch consideration when synchronizing from incubator.

I'd call this cherry-sync: format-patch commit from oslo stable,
update file and import paths and apply it on project's stable branch.
That could be an oslo-incubator RFE:  command option for update.py
--cherry-pick COMMIT

Cheers,
Alan