Yes, that's fine. But is there an official site with its contents?

Happily, I had made a doomsday archive of everything except
"updates", and I just got a copy of that from skeiron. Put it
all up on a local web server and pointed the sources.list.d
file at my local server. That takes care of my own problem, but
it could be a pretty rough ride for an unwitting newcomer.