How to retrain the model？

[CAOXINGWEN]

hi, thanks for your excellent work, I am very interested in your research and I have managed to run your model successfully on singularity. I have some questions to ask you author, I see your model is for coniferous forest, I now have a batch of broadleaf forest samples need to be recognized, the recognition effect is not very good on your model, I would like to re-train your model, but after I download the code, I found that there are a lot of .sh files, and also you didn't introduce how to re-train the model, for example, what should I do with my broadleaf forest data, I would like to fine-tune your model parameters as a pre-trained model. Your code package is a bit huge and I'm having a hard time getting my head around it, can you please answer how to retrain the model?