Backport PR with additional commits is not handled yet.

[Mariatta]

In python/cpython#5781 miss-islington made the backport PR, however there was an additional commit by a core dev.

That scenario is not yet handled:

• it did not report the status check result
• it did not auto-merge

[serhiy-storchaka]

Please don't auto-merge. Commit message created by GitHub for multi-commit PRs is composed from commit messages of both commits. This is not what expected. But preserving the original commit message can be not correct too. An additional commit can introduce semantic changes which should be reflected in commit message. In any case only core developer can make the decision.

[Mariatta]

Ok so it should not auto-merge.
It should still report that status checks are complete.

[AA-Turner]

We now use GH auto merge