I have some more examples git-annex repos:
This is an annex repo I made of this popular abandonware website:
https://github.com/unqueued/repo.macintoshgarden.org-fileset
And some podcasts
https://github.com/unqueued/radiolab-fileset
https://github.com/unqueued/ratholeradio-archive
What's cool is that people can use standard pull requests to add files to the repo. And the repo itself is small, but it can represent huge filesets. Datalad has some really fascinating medical imaging data repos that are massive (https://www.datalad.org/datasets.html).
If you wanna see a really good example of a repo with versioned binary files, check this out the git annex repo of previous git-annex binary releases:
https://downloads.kitenet.net/.git/
You can just use standard git workflows to see previous revisions of a file (well, previous hashes) but it is really easy to hook into.
I just cloned one of the repos, seems I really should look more into annex. Feel free to join the Discord channel, that would be the easiest to go from there
Git annex lets you track references to binary files, only using git for storing references to file hashes.
And you can use custom back ends to efficiently store differential data.
For example, I have an annex repo that stores about 150G of text files, but it uses bup to compress it down to about 20G, while I can still have access to different versions via git.
1: https://git-annex.branchable.com/special_remotes/bup/