Re: Porcelain specific metadata under .git?

Andreas Ericsson [off-list ref] writes:

Yes, but I understood him to mean "it's a tree-sha" instead of a
branch/head thing, which would mean it doesn't fit the .git/refs
definition of ref.

I am not sure what you meant by "it's a tree-sha", but if you
have an impression that .git/refs define "ref" as committish,
you are mistaken.  Linus has .git/refs/tags/v2.6.11-tree which
tags a tree object.  I even have a .git/refs/tags/junio-gpg-pub
which tags a blob (blobish ;-> ?).