def _mirrorpod_filter(pod):
    """Check if a pod contains the mirror K8s annotation.

    Args:
      - pod: kubernetes pod object
    Returns: (False, "") if the pod has the mirror annotation,
             (True, "") if not
    """
    mirror_annotation = "kubernetes.io/config.mirror"

    annotations = pod["metadata"].get("annotations")
    if annotations and mirror_annotation in annotations:
        return False, ""
    return True, ""