diff --git a/swh/core/github/tests/test_pytest_plugin.py b/swh/core/github/tests/test_pytest_plugin.py
index 57aa7e3..cb49816 100644
--- a/swh/core/github/tests/test_pytest_plugin.py
+++ b/swh/core/github/tests/test_pytest_plugin.py
@@ -1,50 +1,52 @@
 # Copyright (C) 2022  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-import pytest
 import time
+
+import pytest
+
 from swh.core.github.pytest_plugin import fake_time_sleep, fake_time_time
 
 
 @pytest.mark.parametrize("duration", [10, 20, -1])
 def test_fake_time_sleep(duration):
 
     if duration < 0:
         with pytest.raises(ValueError, match="negative"):
             fake_time_sleep(duration, [])
     else:
         sleep_calls = []
         fake_time_sleep(duration, sleep_calls)
         assert duration in sleep_calls
 
 
 def test_fake_time_time():
     assert fake_time_time() == 0
 
 
 def test_monkeypatch_sleep_calls(monkeypatch_sleep_calls):
 
     sleeps = [10, 20, 30]
     for sleep in sleeps:
         # This adds the sleep number inside the monkeypatch_sleep_calls fixture
         time.sleep(sleep)
         assert sleep in monkeypatch_sleep_calls
 
     assert len(monkeypatch_sleep_calls) == len(sleeps)
     # This mocks time but adds nothing to the same fixture
     time.time()
     assert len(monkeypatch_sleep_calls) == len(sleeps)
 
 
 def test_num_before_ratelimit(num_before_ratelimit):
     assert num_before_ratelimit == 0
 
 
 def test_ratelimit_reset(ratelimit_reset):
     assert ratelimit_reset is None
 
 
 def test_num_ratelimit(num_ratelimit):
     assert num_ratelimit is None