Daniel Barkalow [off-list ref] writes:
I don't think this buys you anything, because then the tag needs to be
accessible from something, which is the same problem you were trying to
solve for the commit.
Actually not. My suggestion was a qualified one: "If all you
need is a textual information plus a single pointer to a commit
object", and Martin did not say different generations of arch
metainfo needs to be strung together, so you could keep updating
the tag object in "refs/tags/arch-meta-info", which has such a
pointer and textual arch meta info and nothing else.