Re: How do I get the file contents from an arbitrary revision to stdout?

Jeff King [off-list ref] writes:

  git cat-file -p bar-branch:foo.c

(the "-p" is "pretty-print based on the object's type", so the two are
equivalent).

IIRC, "cat-file -p" doesn't do textconv, but "show" would, and
depending on the use case the difference may matter.