improved version

django/apps/registry.pyi

@@ -1,10 +1,11 @@
 from django.apps.config import AppConfig
 from django.db.migrations.state import AppConfigStub
+from django.db.models.base import Model
 from typing import (
-    Any,
     List,
     Optional,
     Tuple,
+    Type,
     Union,
 )
 
@@ -12,12 +13,17 @@ from typing import (
 class Apps:
     def __init__(
         self,
-        installed_apps: Union[Tuple, List[AppConfigStub], List[str]] = ...
+        installed_apps: Union[Tuple, List[str], List[AppConfigStub]] = ...
     ) -> None: ...
     def check_apps_ready(self) -> None: ...
     def check_models_ready(self) -> None: ...
     def clear_cache(self) -> None: ...
-    def do_pending_operations(self, model: Any) -> None: ...
+    def do_pending_operations(self, model: Type[Model]) -> None: ...
     def get_app_config(self, app_label: str) -> AppConfig: ...
     def get_containing_app_config(self, object_name: str) -> Optional[AppConfig]: ...
-    def get_model(self, app_label: str, model_name: None = ..., require_ready: bool = ...) -> Any: ...
+    def get_model(
+        self,
+        app_label: str,
+        model_name: None = ...,
+        require_ready: bool = ...
+    ) -> Type[Model]: ...