account for setting origin head on clone in porcelain tests

dulwich/tests/test_porcelain.py

@@ -652,7 +652,10 @@ class CloneTests(PorcelainTestCase):
         self.assertEqual(0, len(target_repo.open_index()))
         self.assertEqual(c1.id, target_repo.refs[b"refs/heads/else"])
         self.assertEqual(c1.id, target_repo.refs[b"HEAD"])
-        self.assertEqual({b"HEAD": b"refs/heads/else"}, target_repo.refs.get_symrefs())
+        self.assertEqual(
+            {b"HEAD": b"refs/heads/else", b"refs/remotes/origin/HEAD": b"refs/remotes/origin/else"},
+            target_repo.refs.get_symrefs(),
+        )
 
 
 class InitTests(TestCase):
@@ -2385,6 +2388,8 @@ class FetchTests(PorcelainTestCase):
             for k, v in remote_refs.items()
             if k.startswith(local_ref_prefix)
         }
+        if b"HEAD" in locally_known_remote_refs and b"HEAD" in remote_refs:
+            normalized_remote_refs[b"HEAD"] = remote_refs[b"HEAD"]
 
         self.assertEqual(locally_known_remote_refs, normalized_remote_refs)