docs: add docs about refetch option

docs/configuration.md

@@ -464,6 +464,10 @@ remotes:
 
 An optional *branch* or *tag* name.
 
+> [!NOTE]
+>
+> If you initially had `ref` option, ran `lefthook install`, and then removed it, lefthook won't decide which branch/tag to use as a ref. So, if you added it once, please, use it always to avoid issues in local setups.
+
 **Example**
 
 ```yml
@@ -474,9 +478,21 @@ remotes:
  ref: v1.0.0
 ```
 
-> [!NOTE]
->
-> If you initially had `ref` option, ran `lefthook install`, and then removed it, lefthook won't decide which branch/tag to use as a ref. So, if you added it once, please, use it always to avoid issues in local setups.
+### `refetch`
+
+**Default:** `false`
+
+Force remote config refetching on every run. Lefthook will be refetching the specified remote every time it is called.
+
+**Example**
+
+```yml
+# lefthook.yml
+
+remotes:
+ - git_url: https://github.com/evilmartians/lefthook
+ refetch: true
+```
 
 ### `configs`