From 9dd95690e6f4ff62d66595eb2e0f78c223b32a3e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Fri, 5 Feb 2016 15:35:19 +0100
Subject: [PATCH] git-r3.eclass: Filter out /. components from submodule refs,
 #572312

---
 eclass/git-r3.eclass | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/eclass/git-r3.eclass b/eclass/git-r3.eclass
index 42d6dbf6b326c..957ff08c296ba 100644
--- a/eclass/git-r3.eclass
+++ b/eclass/git-r3.eclass
@@ -362,8 +362,13 @@ _git-r3_set_submodules() {
 			submodule."${subname}".update)
 		[[ ${upd} == none ]] && continue
 
+		# https://github.com/git/git/blob/master/refs.c#L39
+		# for now, we just filter /. because of #572312
+		local enc_subname=${subname//\/.//_}
+		[[ ${enc_subname} == .* ]] && enc_subname=_${enc_subname#.}
+
 		submodules+=(
-			"${subname}"
+			"${enc_subname}"
 			"$(echo "${data}" | git config -f /dev/fd/0 \
 				submodule."${subname}".url || die)"
 			"$(echo "${data}" | git config -f /dev/fd/0 \