commits, ordered by their distance to the included and excluded
commits. The farthest from them is displayed first. (This is the only
one displayed by `--bisect`.)
This is useful because it makes it easy to choose a good commit to
test when you want to avoid to test some of them for some reason (they
may not compile for example).
This option can be used along with `--bisect-vars`, in this case,
after all the sorted commit objects, there will be the same text as if
`--bisect-vars` had been used alone.