Golang中的原子和并发安全Redis事务

I'm trying to implement the following logic in my go program:

def action:
 1. GET the value of KEY from Redis
 2. SET the value of KEY to 0

go-redis

I'm familiar with Redis transactions but I couldn't seem to find a decent document or example on how to implement the desired set of actions in a concurrent-safe and atomic manner in Golang.

action