From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 27 May 2015 20:28:39 +0000 (+0100)
Subject: git_get_ref: Move to Dgit.pm and reimplement
X-Git-Tag: debian/0.30~137
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=dgit.git;a=commitdiff_plain;h=0c838feda384f115a115ddd609eca9b8c6ece162;hp=0c838feda384f115a115ddd609eca9b8c6ece162

git_get_ref: Move to Dgit.pm and reimplement

Use
  git for-each-ref --format=%(objectname) [r]efs/whatever

This pattern won't match literally as a prefix because a ref name
cannot contain [, so it must match according to fnmatch.  whatever
cannot contain fnmatch metacharacters because they're not valid in ref
names.

This is a better idiom because it might directly look up the ref in
question (although currently it probably doesn't).
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