From: Jeff King <peff@peff.net>
Date: Mon, 11 Jan 2016 15:46:51 GMT
Subject: [PATCH 0/2] fix corner case with lock_ref_sha1_basic and REF_NODEREF
Message-ID: <20160111154651.GA25338@sigill.intra.peff.net>

I came across an interesting regression case with the new
create_symref() that uses lock_ref_sha1_basic(). It turns out that the
bug is actually in the latter function, but that it's slightly easier to
tickle it since we added new callers.

The bug and fix are rather involved, so I won't repeat the explanation
from patch 2/2 here. The first patch is just a cleanup necessary to
accurately in test in the second.

  [1/2]: checkout,clone: check return value of create_symref
  [2/2]: lock_ref_sha1_basic: handle REF_NODEREF with invalid refs

-Peff