How to convert the .pth weights saved from fine-tuned DreamBooth into .ckpt weights?

[Littlesalt233]

Thank you for your excellent work! I've encountered a problem when putting the weights of SD model fine-tuned by DreamBooth to SD webui. It seems that SD webui only accepts weights files in .ckpt format. I couldn't find a method to convert .pth weights to .ckpt weights in the diffusers library by Hugging-Face either.
Additionally, I'd like to ask how to change the pre-trained weights in DreamBooth, as I aim to perform multiple fine-tunings with different data.