Git diff: adding additional parameters at the end of the command

Author: samdatadope

git/diff.py

@@ -157,6 +157,9 @@ def diff(self, other: Union[Type[Index], Type['Tree'], object, None, str] = Inde
             args.extend(paths)
         # END paths handling
 
+        if 'end_params' in kwargs:
+            args.extend(kwargs.pop('end_params'))
+
         kwargs['as_process'] = True
         proc = diff_cmd(*self._process_diff_args(args), **kwargs)