From 2bf626e440e164f5af2d3083b8e0b79af32252d8 Mon Sep 17 00:00:00 2001
From: Chris Weyl <cweyl@alumni.drew.edu>
Date: Tue, 8 Nov 2016 19:49:42 -0600
Subject: [PATCH] ensure _source_branch is never a tag

If you're releasing to the CPAN where your HEAD is also tagged,
_source_branch's default would populate the attribute with the tag name.
This is sub-optimal, and tends to result in things like:

    fatal: update_ref failed for ref 'refs/heads/build/tags/0.006^0': refusing to update ref with bad name 'refs/heads/build/tags/0.006^0'

The fix is to constrain the set of refs name-rev uses to name a commit
to the set of branches.
---
 lib/Dist/Zilla/Plugin/Git/CommitBuild.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Dist/Zilla/Plugin/Git/CommitBuild.pm b/lib/Dist/Zilla/Plugin/Git/CommitBuild.pm
index 40ecec3..4ab4f20 100644
--- a/lib/Dist/Zilla/Plugin/Git/CommitBuild.pm
+++ b/lib/Dist/Zilla/Plugin/Git/CommitBuild.pm
@@ -61,7 +61,7 @@ has _source_branch => (
     lazy    => 1,
     init_arg=> undef,
     default => sub {
-        ($_[0]->git->name_rev( '--name-only', 'HEAD' ))[0];
+        ($_[0]->git->name_rev( '--name-only', '--refs=refs/heads/*', 'HEAD' ))[0];
     },
 );