Imagine git were built on top of IPFS, and aimed specifically at datasets. Qri uses IPFS to store & move data, so all versions are just normal IPFS hashes. eg this: https://app.qri.io/b5/world_bank_population is just referencing this IPFS hash: https://ipfs.io/ipfs/QmXwh5kNGsNAysRx66jcMiw1grtFf9j7zLFGbK9...

full disclosure: I work at Qri