It's definitely an interesting take. Without knowledge of who Kokoko was, I thought it was going to transform into drum n' bass track.
Just quickly looked into some of their own music. To take a stab at how to describe them, It looks like they're a repurposed instrument, rhythmic group. I'm kinda familiar with this style before, as I've listened to Konono no. 1, which is also from Democratic Republic of the Congo.
https://www.youtube.com/watch?v=Ihaaj2xSG18was featured on one of Chems mixes, forgot which one