Ok, the docs said "drive:" so I used that, guess they need correcting?
That version was the one I found in AUR. First troubleshooting step, try a later version.
Now I just have to figure out how to sync (bidirectionall) a single branch of it. DOn't want the whole thing to sync. I'm sure that's manageable though.
Yep, got it all set. It's complicated by the fact that my OS of choice (HoloISO) doesn't have cron installed and relies on systemd timers instead, which is much more complicated. May want to update the cron documentation to cover systemd timers, or at least tell people to use a translator utility (AUR has a couple but I forced myself to learn them for the future).