Plain regular git does keep a copy of it's data in your .git folder, and every checkout/clone/copy of that repository stores the data, and it stores all old copies of all files. That's how git works. It also makes it a bit unweildy for large files like that.
What's cool (about git) is that the hash revisions (i.e. what git uses instead of version numbers) is basically a checksum of every file and every old version of every file. So if an old version of a file changed, the checksum would change and you'd be on a different branch!
Plain regular git does keep a copy of it's data in your .git folder, and every checkout/clone/copy of that repository stores the data, and it stores all old copies of all files. That's how git works. It also makes it a bit unweildy for large files like that.
What's cool (about git) is that the hash revisions (i.e. what git uses instead of version numbers) is basically a checksum of every file and every old version of every file. So if an old version of a file changed, the checksum would change and you'd be on a different branch!