diff --git a/tests/test_git_superproject.py b/tests/test_git_superproject.py
index f884f507..dc46ec65 100644
--- a/tests/test_git_superproject.py
+++ b/tests/test_git_superproject.py
@@ -490,7 +490,9 @@ class SuperprojectTestCase(unittest.TestCase):
 
                     self.assertTrue(self._superproject._Fetch())
                     self.assertEqual(
-                        mock_git_command.call_args.args,
+                        # TODO: Once we require Python 3.8+,
+                        #  use 'mock_git_command.call_args.args'.
+                        mock_git_command.call_args[0],
                         (
                             None,
                             [
@@ -510,7 +512,9 @@ class SuperprojectTestCase(unittest.TestCase):
                     # If branch for revision exists, set as --negotiation-tip.
                     self.assertTrue(self._superproject._Fetch())
                     self.assertEqual(
-                        mock_git_command.call_args.args,
+                        # TODO: Once we require Python 3.8+,
+                        #  use 'mock_git_command.call_args.args'.
+                        mock_git_command.call_args[0],
                         (
                             None,
                             [