Root cause: unittest.mock.patch with new_callable=AsyncMock fails in
full-suite context due to asyncio event loop state from earlier tests.
Fix: use direct module dict patching (gb_mod.run_blocking = AsyncMock())
instead of patch() context manager. This bypasses the mock machinery
interaction with inherited event loop state.
Also add conftest.py in tests/services/git/ with event_loop fixture
for per-function isolation.
Result: 2602 passed, 0 failed, 3 skipped, 1 xpassed
busya
654f92e7ad