For commands like [[`git-annex-whereis`|git-annex-whereis]] that take a `path` argument, it would help if this could be generalized to taking a [tree-ish](https://git-scm.com/docs/gitglossary#Documentation/gitglossary.txt-aiddeftree-ishatree-ishalsotreeish). E.g. for `git-annex-whereis` this could be used to look up where previous file versions are stored.
+
+> [[done]] before this was filed
--- /dev/null
+[[!comment format=mdwn
+ username="joey"
+ subject="""comment 1"""
+ date="2021-05-12T16:23:02Z"
+ content="""
+This is already supported by whereis (and quite a lot of other commands)
+with the --branch option, which is documented to support a treeish.
+"""]]