Basically all atomic-commit based VCs store snapshots. That's how they achieve atomic commits. Git is copy-on-write, so it's not storing full snapshots either

Basically all atomic-commit based VCs store snapshots. That's how they achieve atomic commits. Git is copy-on-write, so it's not storing full snapshots either, because it's space prohibitive. All of the storage mechanisms (deltas, etc) are time/space tradeoffs. I don't think there is anything odd about that? It's true in lots of things beyond VCen