merge(third_party/git): Merge squashed git subtree at v2.23.0

Merge commit '1b593e1ea4' as 'third_party/git'

third_party/git/t/t9145-git-svn-master-branch.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+# Copyright (c) 2009 Eric Wong
+#
+test_description='git svn initial master branch is "trunk" if possible'
+. ./lib-git-svn.sh
+
+test_expect_success 'setup test repository' '
+	mkdir i &&
+	> i/a &&
+	svn_cmd import -m trunk i "$svnrepo/trunk" &&
+	svn_cmd import -m b/a i "$svnrepo/branches/a" &&
+	svn_cmd import -m b/b i "$svnrepo/branches/b"
+'
+
+test_expect_success 'git svn clone --stdlayout sets up trunk as master' '
+	git svn clone -s "$svnrepo" g &&
+	(
+		cd g &&
+		test x$(git rev-parse --verify refs/remotes/origin/trunk^0) = \
+		     x$(git rev-parse --verify refs/heads/master^0)
+	)
+'
+
+test_done