After Batman catches Barry in the "Bat Cave", Barry tried to prove his identity by getting his suit out from his ring, what comes out however is Zoom's Reverse Flash suit. Batman speculates that Zoom did this because he wanted Barry to know who was responsible for the altered timeline.
However, in the end, we find out it wasn't Zoom but Barry who broke the Time Barrier to save his mother. So then if Zoom didn't alter time, why did he leave his suit in Barry's ring?