Revset: visible version of hidden commit

[crepererum]

Is there are way to transform a revset that may or may not contain hidden commits to their visible versions? E.g. if you run mine() & tracked_remote_branches() you may end up with hidden commits because the local version of the change might already be rebased:

I've tried to use descendants but this only resulted in an empty result:

[bnjmnt4n]

There's no existing revset functions which can do this. The tracking issue for this is #4129.