diff --git a/tools/helpers.py b/tools/helpers.py
index 12518f7..bcde5ac 100644
--- a/tools/helpers.py
+++ b/tools/helpers.py
@@ -66,6 +66,12 @@ def get_dc_text(name: str, dc_id: int) -> str:
         return "❗️ 无法获取该用户/群组的数据中心 ..."
 
 
+def get_sender_name(msg: Message) -> str:
+    if msg.from_user:
+        return get_fullname(msg.from_user)
+    return msg.sender_chat.title
+
+
 def get_fullname(user: User) -> str:
     if user:
         if user.last_name:
diff --git a/tools/updates.py b/tools/updates.py
index 9d16496..9dff116 100644
--- a/tools/updates.py
+++ b/tools/updates.py
@@ -77,16 +77,15 @@ def get_alias_of_cmds() -> Dict[str, str]:
         return dict(zip(cmd_yml.keys(), (v.get('cmd') for v in cmd_yml.values())))
 
 
-async def pull_and_update_command_yml() -> None:
+async def pull_and_update_command_yml(is_update: bool = True) -> None:
     # 读取远程command.yml
-    async with session.get(
-        CMD_YML_REMOTE, timeout=9.9,
-    ) as resp:
+    async with session.get(CMD_YML_REMOTE, timeout=9.9) as resp:
         if resp.status == 200:
             data = yaml.full_load(await resp.text())
-            with open(COMMAND_YML, "rb") as f:
-                cmd_yml: Dict[str, Dict[str, str]] = yaml.full_load(f)
-                data.update(cmd_yml)
+            if is_update:
+                with open(COMMAND_YML, "rb") as f:
+                    cmd_yml: Dict[str, Dict[str, str]] = yaml.full_load(f)
+                    data.update(cmd_yml)
             # 合并到本地，以本地为主
             update_cmd_yml(data)
         resp.raise_for_status()