List one hash in "Some good revs are not ancestors of the bad rev."

Dear git folks,


With

     $ git version
     git version 2.26.2

during `git bisect` I got:

Some good revs are not ancestors of the bad rev.
git bisect cannot work properly in this case.
Maybe you mistook good and bad revs?

It would be great, if the (“closest”) conflicting rev could be printed 
too, so the user can easily check it.


Kind regards,

Paul