>>c17r+Ot
Yeah I don't get that, is it a joke? Pun? Some meaning that isn't how I'm (or your first two takes) reading it?
Even git's early days were well after the last ARPANET days.
Edit: I suppose they just mean 'since time immemorial', but in internets. Perhaps I'm just tired/'whooshed' but I think that was more confusing than they were going for!