From 33757ceaca394c2af95930775ee8ca1fd55108cf Mon Sep 17 00:00:00 2001
From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sun, 31 May 2015 11:47:18 +0100
Subject: [PATCH] Dgit.pm: git_for_each_ref: Provide optional $git_dir argument

---
 Debian/Dgit.pm | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/Debian/Dgit.pm b/Debian/Dgit.pm
index 32c2bc56..48aae188 100644
--- a/Debian/Dgit.pm
+++ b/Debian/Dgit.pm
@@ -188,12 +188,15 @@ sub git_rev_parse ($) {
     return cmdoutput qw(git rev-parse), "$_[0]~0";
 }
 
-sub git_for_each_ref ($$) {
-    my ($pattern,$func) = @_;
+sub git_for_each_ref ($$;$) {
+    my ($pattern,$func,$gitdir) = @_;
     # calls $func->($objid,$objtype,$fullrefname,$reftail);
     # $reftail is RHS of ref after refs/[^/]+/
     # breaks if $pattern matches any ref `refs/blah' where blah has no `/'
     my @cmd = (qw(git for-each-ref), $pattern);
+    if (defined $gitdir) {
+	@cmd = ('sh','-ec','cd "$1"; shift; exec "$@"','x', $gitdir, @cmd);
+    }
     open GFER, "-|", @cmd or die $!;
     debugcmd "|", @cmd;
     while (<GFER>) {
-- 
2.30.2