Giles Greenwood shares a tip on how to avoid torn calluses when snatch gripping.
Keep a straight wrist from the beginning (see photo in his post) to minimize movement of the bar in your hands.
Although this initially feels like you’re not gripping the bar as strongly it is, in fact, how your grip is going to end up once you start lifting the bar anyway.
The choice is between starting with this grip or your hands moving (this is what rips your skin) to this position under the weight of the bar during a lift.
Snatch Grip and How to Minimize Torn Calluses is a post by Gregor Winter from All Things Gym.