How to load local code for model with `trust_remote_code=True`?
### Feature request

When I use the model with `trust_remote_code=True`, I cannot directly change these remote codes because everytime I  load model it will request new codes from remote hub. So how can I avoid that ? Can I custom these codes in local? 

example:
```
model = AutoModelForSeq2SeqLM.from_pretrained('THUDM/glm-large-chinese', trust_remote_code=True)
model.forward(...) # which I want to change the code
```

### Motivation

The remote code is not always good to fit user needs. So the user should have ways to change the remote code. 

### Your contribution

if there is no other way I can sub a PR.
Hi @LZY-the-boys, thanks for raising this issue, 

If I've understood correctly, the question being asked is how to load in a customized version of the model on the ['THUDM/glm-large-chinese' repo](https://huggingface.co/THUDM/glm-large-chinese). 

When running: 
```python
model = AutoModelForSeq2SeqLM.from_pretrained('THUDM/glm-large-chinese', trust_remote_code=True)
```

The model being downloaded will be the one defined in [THUDM/glm-large-chinese](https://huggingface.co/THUDM/glm-large-chinese). `trust_remote_code=True` is simply saying that it's OK for this model code to be downloaded and run from the hub. 

If you wish to load a local model, then this model should be saved out to either the hub or locally and the path to its location passed to `from_pretrained` e.g.:

```
model.save_pretained('path/to/my/model') # Model with adapted methods
model = ModelClass.from_pretrained('path/to/my/model', trust_remote_code=True)
```

There's more information about using models with [custom code here](https://huggingface.co/docs/transformers/v4.27.1/en/custom_models#using-a-model-with-custom-code).<|||||>OK, the `model.save_pretrained` indeed is a choice to custom the remote code in local folder, though it will copy these local files to a `transformers/local` dir and run . In early times I change the code in that temporary directory so cause the above doubt. 