It is still likely 5 years before flight ready XA102 / XA103 are available. Unless the USAF has been funding long lead hardware based on PDR hardware design, it is usually 12-18 months for rotating disk forgings to be available, then machining time to the DDR drawings, engine assembly for ground test engines (including heavily instrumented test engines for stress verification), redesign with hardware procurement & manufacture for things that don’t go right from the DDR design, then Initial Flight Release (IFR) to begin flight test, Initial Service Release to continue flight test, and finally Production Representative engines at the end of EMD before series production. Some of these steps can be run somewhat in parallel, but engine development is hard.
Based on the size engine described for the F-47 with the XA102 / 103 being smaller than the F-35 sized XA100 / 101, I wouldn’t be surprised to see the first F-47 flying with modified F119 engines. They just need to ensure that the F-14 “interim TF30” scenario doesn’t repeat…