Using [zsync](http://zsync.moria.org.uk/ http://zsync.moria.org.uk/) is an alternative option from my understanding? I could be technically inaccurate, but my

Using [zsync](http://zsync.moria.org.uk/ http://zsync.moria.org.uk/) is an alternative option from my understanding? I could be technically inaccurate, but my understanding is that it's rsync but with the server serving a metadata file which allows the rsync-diffing to happen from the client side rather than the server side - hence no clever server required. It also doesn't require diffing particular revisions; but only the different blocks will be fetched. It does require server the metadata file, but they're note very large afaik.