Jeremy already mentioned Beer SE in the comments at 15:10a 1comment, but I'm pretty sure we have a few other renames in the past as well. Moderators -> Community Building comes to mind, possibly others. Heck, Mechanics' DB is still StackExchange.Garage. We'd need to do figure out what all needs to be updated.
Given that this isn't likely gonna be the last time we rename a site in a way that affects the subdomain/database names, I think I'd prefer building some sort of aliasing thing into the dump process, so that we don't have to take a site offline every time we need to do a rename.
Or, even simpler, provide release notes with a data dump and/or note these few cases in our description on archive.org.