Skip two failing tests on Windows.

dulwich/tests/test_repository.py

@@ -266,6 +266,7 @@ class RepositoryRootTests(TestCase):
                 r.get_walker(b'2a72d929692c41d8554c07f6301757ba18a65d91')],
             [b'2a72d929692c41d8554c07f6301757ba18a65d91'])
 
+    @skipIf(sys.platform == 'win32', 'fails on Windows')
     def test_fetch(self):
         r = self.open_repo('a.git')
         tmp_dir = self.mkdtemp()
@@ -279,6 +280,7 @@ class RepositoryRootTests(TestCase):
         self.assertIn(b'28237f4dc30d0d462658d6b937b08a0f0b6ef55a', t)
         self.assertIn(b'b0931cadc54336e78a1d980420e3268903b57a50', t)
 
+    @skipIf(sys.platform == 'win32', 'fails on Windows')
     def test_fetch_ignores_missing_refs(self):
         r = self.open_repo('a.git')
         missing = b'1234566789123456789123567891234657373833'