You might be able to get the same hash if you did a backup of the disk in iso format. It doesn’t matter though since you wouldn’t be able to use that format to play anything.
All that to say that these seem to be the wrong tools for what you’re actually trying to do.
Don’t use jellyfin.server.local
.local is reserved for mdns, which doesn’t support more than one dot. (Though it may still sometimes work).
In any case, to make that work you need either a DNS server on your network or something like duckdns (which supports wildcard entries).