use shallow copy for #13535

import collections

import copy

import os.path

import sys

import gc

    if shared.opts.sd_checkpoint_cache > 0:

        # cache newly loaded model

        checkpoints_loaded[checkpoint_info] = copy.deepcopy(state_dict)

        checkpoints_loaded[checkpoint_info] = state_dict.copy()

    model.load_state_dict(state_dict, strict=False)

    timer.record("apply weights to model")