fix(ci): run dependency PR file/git ops inside a clone of the target repo

tests/unit/test_create_dependency_pr.py

@@ -16,6 +16,13 @@ from devx.ci.create_dependency_pr import (
 )
 
 
+@pytest.fixture(autouse=True)
+def _mock_subprocess() -> MagicMock:
+    """Mock subprocess so CLI tests never run a real git clone."""
+    with patch("devx.ci.create_dependency_pr.subprocess.run") as m:
+        yield m
+
+
 class TestFindPinnedVersion:
     def test_finds_pip_git_pin(self, tmp_path: Path) -> None:
         content = "grm @ git+https://git.example.com/repo.git@v0.5.1"