So was Rey’s training intended to foreshadow Kylo’s fight with Luke at the end of The Last Jedi?
I hesitate to say that Rey’s moves on Ahch-To and Kylo’s strikes against Luke are identical, but there are strong parallels, and the final fight seems to echo Rey’s training.
The final set where Rey slices through the rock (much to the caretaker’s chagrin) and Kylo slices through Luke certainly could be echoes of one another.
It is a little harder to tell if the second set of moves is the same because of the framing, but they might be.