The movement of the container masks any movement Hisoka makes as it barrels down the alley. Unfortunately for Jaime it reveals nothing, though down there and around the corner, he'll still feel that DNA from the woman. It's just there, unmoving, like who ever is down there, who ever this killer is is just frozen in place. It seems it'll stay there too, as long as Jaime does, unless he goes down there in order to look. Whatever it is won't move at all, even as he draws closer.