I dont have hatchling afrock pics but here are some snakes I own or have owned in the pass to kind of help you. Sorry the rock pick is bad but I think I have a better body shot somewhere ill look around to try to find or you can always google
Burms pattern tend to be separted all the way down there backs . Rocks patterns usually tend to run together smoothly all the way down. Like they are all connected where as burms are seperated. Hopefully this will help and make sense lol