VFS for Git solves the issue of having gigantic bloated monorepos used by thousands of devs, making sure user efficiently downloads only what is needed for him.
This is basically Git checkout with an autocommit feature, making sure your grandma will be able to do check grammar in your thesis without teaching her how to Git.
Clicking the link, I was kinda hoping it was some version of VFS for Git, but for operating systems other than Windows. Kinda bummed that it wasn't, this seems kinda pointless. Microsoft is (allegedly) working on macOS and Linux drivers for that thing, but it's been a while now. I hope it's going to become an actual thing one day, it's such a cool idea.
I usually understand that people read mostly titles. It was a bit funny though that someone likely managed not to read both the posted site and a link in a comment they replied to.
https://github.com/microsoft/VFSForGit