Revert (for now) the change on `Deta` in #22437 (#22750)

fix
Co-authored-by: ydshieh <ydshieh@users.noreply.github.com>

src/transformers/models/deta/modeling_deta.py

@@ -244,7 +244,7 @@ class DetaObjectDetectionOutput(ModelOutput):
 
 
 def _get_clones(module, N):
-    return nn.ModuleList([module for i in range(N)])
+    return nn.ModuleList([copy.deepcopy(module) for i in range(N)])
 
 
 def inverse_sigmoid(x, eps=1e-5):

tests/models/deta/test_modeling_deta.py

@@ -192,6 +192,10 @@ class DetaModelTest(ModelTesterMixin, GenerationTesterMixin, PipelineTesterMixin
 
         return False
 
+    @unittest.skip("Skip for now. PR #22437 causes some loading issue. See (not merged) #22656 for some discussions.")
+    def test_can_use_safetensors(self):
+        super().test_can_use_safetensors()
+
     # special case for head models
     def _prepare_for_class(self, inputs_dict, model_class, return_labels=False):
         inputs_dict = super()._prepare_for_class(inputs_dict, model_class, return_labels=return_labels)