Fixed: commit date format

Signed-off-by: Václav Valíček <valicek1994@gmail.com>

tests/lib/test_detected_commit.py

@@ -1,5 +1,7 @@
 import pytest
 from repo_cloner.lib import DetectedCommit
+import os
+import time
 
 
 @pytest.fixture
@@ -40,6 +42,8 @@ def test_author(det):
 
 
 def test_date(det):
+	os.environ['TZ'] = 'Europe/Prague'
+	time.tzset()
 	assert det.date == "04-08-2022, 11:20:38"