t / t5100 / rfc2047-info-0004on commit peel_onion: disambiguate to favor tree-ish when we know we want a tree-ish (ed1ca60)
   1Author: Nathaniel Borenstein (םולש ןב ילטפנ)
   2Email: nsb@thumper.bellcore.com
   3Subject: Test of new header generator
   4