diff --git a/tests/git_cl_test.py b/tests/git_cl_test.py
index c36bf94b9f..44fcc54f45 100755
--- a/tests/git_cl_test.py
+++ b/tests/git_cl_test.py
@@ -1272,6 +1272,8 @@ class TestGitCl(unittest.TestCase):
                 scm.GIT.GetBranchConfig('', 'main',
                                         git_cl.GERRIT_SQUASH_HASH_CONFIG_KEY))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_upload_traces_no_gitcookies(self):
         self._run_gerrit_upload_test(
             ['--no-squash'],
@@ -1281,6 +1283,8 @@ class TestGitCl(unittest.TestCase):
             change_id='Ixxx',
             gitcookies_exists=False)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_upload_without_change_id_nosquash(self):
         self._run_gerrit_upload_test(
             ['--no-squash'],
@@ -1289,6 +1293,8 @@ class TestGitCl(unittest.TestCase):
             post_amend_description='desc ✔\n\nBUG=\n\nChange-Id: Ixxx',
             change_id='Ixxx')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_upload_without_change_id_override_nosquash(self):
         self._run_gerrit_upload_test(
             [],
@@ -1298,6 +1304,8 @@ class TestGitCl(unittest.TestCase):
             post_amend_description='desc ✔\n\nBUG=\n\nChange-Id: Ixxx',
             change_id='Ixxx')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_no_reviewer(self):
         self._run_gerrit_upload_test(
             [],
@@ -1306,6 +1314,8 @@ class TestGitCl(unittest.TestCase):
             squash_mode='override_nosquash',
             change_id='I123456789')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_push_opts(self):
         self._run_gerrit_upload_test(
             ['-o', 'wip'],
@@ -1315,6 +1325,8 @@ class TestGitCl(unittest.TestCase):
             change_id='I123456789',
             push_opts=['-o', 'wip'])
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_no_reviewer_non_chromium_host(self):
         # TODO(crbug/877717): remove this test case.
         self._run_gerrit_upload_test(
@@ -1325,6 +1337,8 @@ class TestGitCl(unittest.TestCase):
             short_hostname='other',
             change_id='I123456789')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_patchset_title_special_chars_nosquash(self):
         self._run_gerrit_upload_test(
             ['-f', '-t', 'We\'ll escape ^_ ^ special chars...@{u}'],
@@ -1334,6 +1348,8 @@ class TestGitCl(unittest.TestCase):
             change_id='I123456789',
             title='We\'ll escape ^_ ^ special chars...@{u}')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_reviewers_cmd_line(self):
         self._run_gerrit_upload_test(
             ['-r', 'foo@example.com', '--send-mail'],
@@ -1346,6 +1362,8 @@ class TestGitCl(unittest.TestCase):
             final_description=(
                 'desc ✔\n\nBUG=\nR=foo@example.com\n\nChange-Id: I123456789'))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_reviewers_cmd_line_send_email(self):
         self._run_gerrit_upload_test(
             ['-r', 'foo@example.com', '--send-email'],
@@ -2377,6 +2395,8 @@ class TestGitCl(unittest.TestCase):
             },
         }
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_patch_gerrit_default(self):
         self._patch_common()
         self.calls += [
@@ -2389,6 +2409,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(git_cl.main(['patch', '123456']), 0)
         self.assertIssueAndPatchset()
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_patch_gerrit_new_branch(self):
         self._patch_common()
         self.calls += [
@@ -2401,6 +2423,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(git_cl.main(['patch', '-b', 'feature', '123456']), 0)
         self.assertIssueAndPatchset(branch='feature')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_patch_gerrit_force(self):
         self._patch_common('host')
         self.calls += [
@@ -2413,6 +2437,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(git_cl.main(['patch', '123456', '--force']), 0)
         self.assertIssueAndPatchset(git_short_host='host')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_patch_gerrit_guess_by_url(self):
         self._patch_common('else')
         self.calls += [
@@ -2428,6 +2454,8 @@ class TestGitCl(unittest.TestCase):
             0)
         self.assertIssueAndPatchset(patchset='1', git_short_host='else')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_patch_gerrit_guess_by_url_with_repo(self):
         self._patch_common('else')
         self.calls += [
@@ -2444,6 +2472,8 @@ class TestGitCl(unittest.TestCase):
             ]), 0)
         self.assertIssueAndPatchset(patchset='1', git_short_host='else')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('sys.stderr', io.StringIO())
     def test_patch_gerrit_conflict(self):
         self._patch_common()
@@ -2459,6 +2489,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual('Command "git cherry-pick FETCH_HEAD" failed.\n\n',
                          sys.stderr.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('gerrit_util.GetChangeDetail',
                 side_effect=gerrit_util.GerritError(404, ''))
     @mock.patch('sys.stderr', io.StringIO())
@@ -2475,6 +2507,8 @@ class TestGitCl(unittest.TestCase):
         scm.GIT.SetConfig('', 'branch.ger-branch.gerritissue', '123456')
         scm.GIT.SetConfig('', 'branch.gbranch654.gerritissue', '654321')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_checkout_gerrit(self):
         """Tests git cl checkout <issue>."""
         self._checkout_config()
@@ -2632,18 +2666,26 @@ class TestGitCl(unittest.TestCase):
               }, notify, None), ''),
         ]
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_cmd_set_commit_gerrit_clear(self):
         self._cmd_set_commit_gerrit_common(0)
         self.assertEqual(0, git_cl.main(['set-commit', '-c']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_cmd_set_commit_gerrit_dry(self):
         self._cmd_set_commit_gerrit_common(1, notify=False)
         self.assertEqual(0, git_cl.main(['set-commit', '-d']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_cmd_set_commit_gerrit(self):
         self._cmd_set_commit_gerrit_common(2)
         self.assertEqual(0, git_cl.main(['set-commit']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_description_display(self):
         mock.patch('git_cl.Changelist', ChangelistMock).start()
         ChangelistMock.desc = 'foo\n'
@@ -2651,6 +2693,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(0, git_cl.main(['description', '-d']))
         self.assertEqual('foo\n', sys.stdout.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('sys.stderr', io.StringIO())
     def test_StatusFieldOverrideIssueMissingArgs(self):
         try:
@@ -2659,6 +2703,8 @@ class TestGitCl(unittest.TestCase):
             self.assertIn('--field must be given when --issue is set.',
                           sys.stderr.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_StatusFieldOverrideIssue(self):
         def assertIssue(cl_self, *_args):
             self.assertEqual(cl_self.issue, 1)
@@ -2669,6 +2715,8 @@ class TestGitCl(unittest.TestCase):
             git_cl.main(['status', '--issue', '1', '--field', 'desc']), 0)
         self.assertEqual(sys.stdout.getvalue(), 'foobar\n')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_SetCloseOverrideIssue(self):
         def assertIssue(cl_self, *_args):
             self.assertEqual(cl_self.issue, 1)
@@ -2678,6 +2726,8 @@ class TestGitCl(unittest.TestCase):
         mock.patch('git_cl.Changelist.CloseIssue', lambda *_: None).start()
         self.assertEqual(git_cl.main(['set-close', '--issue', '1']), 0)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_description(self):
         scm.GIT.SetConfig('', 'remote.origin.url',
                           'https://chromium.googlesource.com/my/repo')
@@ -2700,6 +2750,8 @@ class TestGitCl(unittest.TestCase):
             ]))
         self.assertEqual('foobar\n', sys.stdout.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_description_set_raw(self):
         mock.patch('git_cl.Changelist', ChangelistMock).start()
         mock.patch('git_cl.sys.stdin', io.StringIO('hihi')).start()
@@ -2707,6 +2759,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(0, git_cl.main(['description', '-n', 'hihi']))
         self.assertEqual('hihi', ChangelistMock.desc)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_description_appends_bug_line(self):
         current_desc = 'Some.\n\nChange-Id: xxx'
 
@@ -2733,6 +2787,8 @@ class TestGitCl(unittest.TestCase):
         scm.GIT.SetConfig('', 'branch.main.gerritissue', '123')
         self.assertEqual(0, git_cl.main(['description']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_description_does_not_append_bug_line_if_fixed_is_present(self):
         current_desc = 'Some.\n\nFixed: 123\nChange-Id: xxx'
 
@@ -2753,6 +2809,8 @@ class TestGitCl(unittest.TestCase):
         scm.GIT.SetConfig('', 'branch.main.gerritissue', '123')
         self.assertEqual(0, git_cl.main(['description']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_description_set_stdin(self):
         mock.patch('git_cl.Changelist', ChangelistMock).start()
         mock.patch('git_cl.sys.stdin',
@@ -2761,6 +2819,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(0, git_cl.main(['description', '-n', '-']))
         self.assertEqual('hi\n\t there\n\nman', ChangelistMock.desc)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)', 'refs/heads'], ),
@@ -2781,6 +2841,8 @@ class TestGitCl(unittest.TestCase):
 
         self.assertEqual(0, git_cl.main(['archive', '-f']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive_tag_collision(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)', 'refs/heads'], ),
@@ -2801,6 +2863,8 @@ class TestGitCl(unittest.TestCase):
 
         self.assertEqual(0, git_cl.main(['archive', '-f']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive_current_branch_fails(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)',
@@ -2817,6 +2881,8 @@ class TestGitCl(unittest.TestCase):
 
         self.assertEqual(1, git_cl.main(['archive', '-f']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive_dry_run(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)', 'refs/heads'], ),
@@ -2835,6 +2901,8 @@ class TestGitCl(unittest.TestCase):
 
         self.assertEqual(0, git_cl.main(['archive', '-f', '--dry-run']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive_no_tags(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)', 'refs/heads'], ),
@@ -2853,6 +2921,8 @@ class TestGitCl(unittest.TestCase):
 
         self.assertEqual(0, git_cl.main(['archive', '-f', '--notags']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive_tag_cleanup_on_branch_deletion_error(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)', 'refs/heads'], ),
@@ -2876,6 +2946,8 @@ class TestGitCl(unittest.TestCase):
 
         self.assertEqual(0, git_cl.main(['archive', '-f']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_archive_with_format(self):
         self.calls = [
             ((['git', 'for-each-ref', '--format=%(refname)', 'refs/heads'], ),
@@ -2896,6 +2968,8 @@ class TestGitCl(unittest.TestCase):
             0, git_cl.main(['archive', '-f', '-p',
                             'archived/{issue}-{branch}']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_cmd_issue_erase_existing(self):
         scm.GIT.SetConfig('', 'branch.main.gerritissue', '123')
         scm.GIT.SetConfig('', 'branch.main.gerritserver',
@@ -2907,6 +2981,8 @@ class TestGitCl(unittest.TestCase):
         self.assertIsNone(scm.GIT.GetConfig('root', 'branch.main.gerritissue'))
         self.assertIsNone(scm.GIT.GetConfig('root', 'branch.main.gerritserver'))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_cmd_issue_erase_existing_with_change_id(self):
         scm.GIT.SetConfig('', 'branch.main.gerritissue', '123')
         scm.GIT.SetConfig('', 'branch.main.gerritserver',
@@ -2924,6 +3000,8 @@ class TestGitCl(unittest.TestCase):
         self.assertIsNone(scm.GIT.GetConfig('root', 'branch.main.gerritissue'))
         self.assertIsNone(scm.GIT.GetConfig('root', 'branch.main.gerritserver'))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_cmd_issue_json(self):
         scm.GIT.SetConfig('', 'branch.main.gerritissue', '123')
         scm.GIT.SetConfig('', 'branch.main.gerritserver',
@@ -3161,6 +3239,8 @@ class TestGitCl(unittest.TestCase):
         self.assertIn('However, your configured .gitcookies file is missing.',
                       sys.stdout.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_git_cl_comment_add_gerrit(self):
         git_new_branch.create_new_branch(None)  # hits mock from scm_mock.GIT.
         scm.GIT.SetConfig('', 'remote.origin.url',
@@ -3171,6 +3251,8 @@ class TestGitCl(unittest.TestCase):
         ]
         self.assertEqual(0, git_cl.main(['comment', '-i', '10', '-a', 'msg']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl.Changelist.GetBranch', return_value='foo')
     def test_git_cl_comments_fetch_gerrit(self, *_mocks):
         scm.GIT.SetConfig('', 'remote.origin.url',
@@ -3324,6 +3406,8 @@ class TestGitCl(unittest.TestCase):
         self.assertEqual(
             0, git_cl.main(['comments', '-i', '1', '-j', 'output.json']))
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_git_cl_comments_robot_comments(self):
         # git cl comments also fetches robot comments (which are considered a
         # type of autogenerated comment), and unlike other types of comments,
@@ -3531,6 +3615,8 @@ class TestGitCl(unittest.TestCase):
         cl = git_cl.Changelist(issue=123456)
         self.assertEqual(cl._GerritChangeIdentifier(), '123456')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_new_default(self):
         self._run_gerrit_upload_test(
             [],
@@ -3540,6 +3626,8 @@ class TestGitCl(unittest.TestCase):
             change_id='I123456789',
             default_branch='main')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def test_gerrit_nosquash_with_issue(self):
         self._run_gerrit_upload_test(
             [],
@@ -4267,6 +4355,8 @@ class CMDTestCaseBase(unittest.TestCase):
         self.addCleanup(mock.patch.stopall)
 
 
+@unittest.skipIf(gclient_utils.IsEnvCog(),
+                'not supported in non-git environment')
 class CMDPresubmitTestCase(CMDTestCaseBase):
     _RUN_HOOK_RETURN = {
         'errors': [],
@@ -4382,6 +4472,8 @@ class CMDTryResultsTestCase(CMDTestCaseBase):
                    ',builds.*.createTime,builds.*.tags'),
     }
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def testNoJobs(self):
         git_cl._call_buildbucket.return_value = {}
 
@@ -4391,6 +4483,8 @@ class CMDTryResultsTestCase(CMDTestCaseBase):
             mock.ANY, 'cr-buildbucket.appspot.com', 'SearchBuilds',
             self._DEFAULT_REQUEST)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def testTrivialCommits(self):
         self.assertEqual(0, git_cl.main(['try-results']))
         git_cl._call_buildbucket.assert_called_with(
@@ -4422,6 +4516,8 @@ class CMDTryResultsTestCase(CMDTestCaseBase):
         ],
                          sys.stdout.getvalue().splitlines())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def testPrintToStdout(self):
         self.assertEqual(0, git_cl.main(['try-results']))
         self.assertEqual([
@@ -4446,6 +4542,8 @@ class CMDTryResultsTestCase(CMDTestCaseBase):
             mock.ANY, 'cr-buildbucket.appspot.com', 'SearchBuilds',
             self._DEFAULT_REQUEST)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     def testPrintToStdoutWithMasters(self):
         self.assertEqual(0, git_cl.main(['try-results', '--print-master']))
         self.assertEqual([
@@ -4470,6 +4568,8 @@ class CMDTryResultsTestCase(CMDTestCaseBase):
             mock.ANY, 'cr-buildbucket.appspot.com', 'SearchBuilds',
             self._DEFAULT_REQUEST)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl.write_json')
     def testWriteToJson(self, mockJsonDump):
         self.assertEqual(0, git_cl.main(['try-results', '--json', 'file.json']))
@@ -4529,6 +4629,8 @@ class CMDTryResultsTestCase(CMDTestCaseBase):
 
 
 class CMDTryTestCase(CMDTestCaseBase):
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl.Changelist.SetCQState')
     def testSetCQDryRunByDefault(self, mockSetCQState):
         mockSetCQState.return_value = 0
@@ -4538,6 +4640,8 @@ class CMDTryTestCase(CMDTestCaseBase):
             sys.stdout.getvalue(), 'Scheduling CQ dry run on: '
             'https://chromium-review.googlesource.com/123456\n')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl._call_buildbucket')
     def testScheduleOnBuildbucket(self, mockCallBuildbucket):
         mockCallBuildbucket.return_value = {}
@@ -4591,6 +4695,8 @@ class CMDTryTestCase(CMDTestCaseBase):
                                                'cr-buildbucket.appspot.com',
                                                'Batch', expected_request)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl._call_buildbucket')
     def testScheduleOnBuildbucketWithRevision(self, mockCallBuildbucket):
         mockCallBuildbucket.return_value = {}
@@ -4694,6 +4800,8 @@ class CMDTryTestCase(CMDTestCaseBase):
                                                'cr-buildbucket.appspot.com',
                                                'Batch', expected_request)
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('sys.stderr', io.StringIO())
     def testScheduleOnBuildbucket_WrongBucket(self):
         with self.assertRaises(SystemExit):
@@ -4703,6 +4811,8 @@ class CMDTryTestCase(CMDTestCaseBase):
             ])
         self.assertIn('Invalid bucket: not-a-bucket.', sys.stderr.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl._call_buildbucket')
     @mock.patch('git_cl._fetch_tryjobs')
     def testScheduleOnBuildbucketRetryFailed(self, mockFetchTryJobs,
@@ -5102,6 +5212,8 @@ class CMDFormatTestCase(unittest.TestCase):
         self._check_yapf_filtering(files, expected)
 
 
+@unittest.skipIf(gclient_utils.IsEnvCog(),
+                'not supported in non-git environment')
 class CMDStatusTestCase(CMDTestCaseBase):
     # Return branch names a,..,f with comitterdates in increasing order, i.e.
     # 'f' is the most-recently changed branch.
@@ -5201,6 +5313,8 @@ class CMDStatusTestCase(CMDTestCaseBase):
             'x\n')
 
 
+@unittest.skipIf(gclient_utils.IsEnvCog(),
+                'not supported in non-git environment')
 class CMDOwnersTestCase(CMDTestCaseBase):
     def setUp(self):
         super(CMDOwnersTestCase, self).setUp()
@@ -5284,6 +5398,8 @@ class CMDLintTestCase(CMDTestCaseBase):
         self.assertIn('pdf.cc:3:  (cpplint) Do not indent within a namespace',
                       git_cl.sys.stderr.getvalue())
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                    'not supported in non-git environment')
     @mock.patch('git_cl.Changelist.GetAffectedFiles',
                 return_value=['chg-1.h', 'chg-2.cc'])
     @mock.patch('git_cl.Changelist.GetCommonAncestorWithUpstream',
diff --git a/tests/git_find_releases_test.py b/tests/git_find_releases_test.py
index 348aee062a..206ec2a1f3 100755
--- a/tests/git_find_releases_test.py
+++ b/tests/git_find_releases_test.py
@@ -14,9 +14,12 @@ from unittest import mock
 
 sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
+import gclient_utils
 import git_find_releases
 
 
+@unittest.skipIf(gclient_utils.IsEnvCog(),
+                'not supported in non-git environment')
 class TestGitFindReleases(unittest.TestCase):
     @mock.patch('sys.stdout', StringIO())
     @mock.patch('git_common.run', return_value='')
diff --git a/tests/git_footers_test.py b/tests/git_footers_test.py
index 2ddb8e05f9..f0ab23731e 100755
--- a/tests/git_footers_test.py
+++ b/tests/git_footers_test.py
@@ -249,6 +249,8 @@ My commit message is my best friend. It is my life.
                 'message\n\nKey: value\nSome: footer\nKey: value', 'Key'),
             'message\n\nSome: footer')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                     'not supported in non-git environment')
     @mock.patch('sys.stdout', StringIO())
     @mock.patch(
         'sys.stdin',
@@ -257,6 +259,8 @@ My commit message is my best friend. It is my life.
         self.assertEqual(git_footers.main([]), 0)
         self.assertEqual(sys.stdout.getvalue(), 'Still: footer\nFoo: baz\n')
 
+    @unittest.skipIf(gclient_utils.IsEnvCog(),
+                     'not supported in non-git environment')
     @mock.patch('sys.stdin',
                 StringIO('line\r\nany spaces\r\n\r\n\r\nFoo: 1\nBar: 2\nFoo: 3')
                 )