Consider adding a "shortest hash abbreviation" as a data point

### Summary 💡

See [https://blog.cuviper.com/2013/11/10/how-short-can-git-abbreviate/](https://blog.cuviper.com/2013/11/10/how-short-can-git-abbreviate/).

This can be handy for people working on the repo in question. It's also just a cool statistic.

### Motivation 🔦

_No response_