[[!comment format=mdwn
 username="joey"
 subject="""comment 2"""
 date="2020-05-26T23:09:08Z"
 content="""
git diff does not care one bit if the branches are related or not.
(git merge does care, but it can be overridden with
--allow-unrelated-histories)

It may be that gitea has some check in its UI to avoid diffing related
braches for some reason.
"""]]
