Quite frequently I see PRs that have all but one test green, and one test just hanging for a long time (e.g. 19 hours). It would be useful to have the ability to restart a particular test rather than re-running all tests (by closing and reopening the PR). Does this functionality exist? IIRC on Travis-CI it did exist, but only for privileged users. Does GitHub Actions have such a thing?

Example: https://github.com/python/cpython/pull/25551 -- the Address Sanitizer run has been waiting for 19 hours.