Wiktionary
fork off
vb. (context idiomatic intransitive English) to diverge into two or more separate paths.
Usage examples of "fork off".
In any case, they could not possibly have responded fast enough to catch this boy, who was well on his way to the end of the Causeway, where he could fork off into any of the Leased Territories.
I grabbed a fork off the bar and rushed outside to help her, giving the bogus astrologer another slap in the nuts on my way out.
Julian bounced the tines of his fork off of the slab of coll fish on his plate to emphasize his point.
Just as long as he kept his fingers and his fork off my plate, we could coexist until the end of the meal.