if you mean the dive then just standing medium kick with proper spacing, if you are on emu you can snap shot the match or add more token and just practice anti air if it jump and dive from mid distance.
Source : https://wiki.supercombo.gg/w/Super_Street_Fighter_2_Turbo/Ken
I will wait until they fixed some issues DF mentioned before I’ll buy it. (also currently busy with other games.)