the clone travels, but it can't teleport (hopefully)find a teleporter, use it to teleport a bit away, destroy the teleporter so that the clone wouldn't use it
desync it by jumping off a wall into the ceiling. you will stop but your clone will not.
Now to make things more challenging- let's assume this clone is made of energy- not matter. As in it can't get "killed." Again, you touch it, you die. It can probably either pass through or melt/burn through any physical obstacle. Now how do you stop it?