From: Junio C Hamano <hidden> Date: 2016-06-15 22:44:54
"Avery Pennarun" [off-list ref] writes:
Is this really desirable?
Yes.
After "git fetch $random_place master && git log ..FETCH_HEAD" to inspect
what the other guy is up to, if you do not like what you see, you do want
the objects that are only reachable from FETCH_HEAD to go away (note that
it is not counted as the root of fsck traversal for this exact reason).