Access to training checkpoints

Are training checkpoints available for the huggingface models (the paper states this is the case) and, if so, how are they accessible? E.g., this is provided as option "revision" to `from_pretrained` for OLMo models.

Thanks

Start with the Hugging Face models and the `from_pretrained` entry point mentioned in the issue, checking whether the `revision` option exposes training checkpoints. Document how checkpoints can be accessed, or clarify if they are unavailable; done when the repository provides a definitive access path.

Written by the indexing model from the issue text.