pull models by ID for reproducible research

I love how ollama makes it easy to set up scientific experiments with various LLMs. However, one thing that is increasingly important in academia is the ability to reproduce and replicate research. For that, it would be extremely useful to pull a given model by its ID, even if a newer one has been published. For example: last month I ran an experiment with then zephyr:latest (ID: 1629f2a8a495), but now my colleague can not reproduce my results because zephyr has been updated and zephyr:latest points to a model with ID 03af36d860cc. As far as I know, there is no tag associated with the older model and it can therefore not be pulled. Treating IDs as additional tags could solve this and make ollama a valuable component in a reproducible scientific workflow.