[simcop2387]

That said, git doesn't just store direct copies either. It will bundle things up into packfiles as it calls them to do compression and encoding of various forms to reduce disk space and make it quicker to find a given version of a file

https://git-scm.com/book/en/v2/Git-Internals-Packfiles

[pedrocr]

Git the tool does packfiles but that's an implementation detail. Git the VCS can work with any object storage backend.