HiMARS can move away right after finish firing its rockets.
The only ways to destroy HiMARS are catching them at the warehouse or use UAV like Predators or Caihong (search and destroy).
I'm kinda think of the usual counter-battery scheme using Radar, pick the rocket in flight and determine the launch position from there and then launch Tochka with cluser warhead.
Ideally it should start right after the first rocket breaks the horizon as that is the first opportunity of detection, where rocket will show its Sides which have Large RCS. So when the Ballistic missile arrived the launcher will hopefully still be in vicinity. But yeah i guess it's way too sensitive to bureaucracy/chain of command issues.
The UAV patrol can work except that they will have to be deep within the enemy territory and take considerable time to search for target and may not be in the right place when the battery starts firing.