def _clean_items_on_load(self) -> None:
        """
        Cleans the current list of the related models.
        """
        if isinstance(self.relation.related_models, MutableSequence):
            for item in self.relation.related_models[:]:
                self.relation.remove(item)

        Cleans the current list of the related models.
        
ormar/relations/querysetproxy.py