Dont increase your post count by posting thse obvious thing... I already know how to use search.. and I DID but i din found any useful threads so I make one, is it ok with you?
First rule of xda is to search. Type 'restore stock firmware to moto g' into Google and the first result is a link to a thread on XDA on how to flash stock. So you obviously didn't search at all.
If that doesn't help there are pages of more links. If they don't help then post a question in a current relevant xda thread.
Don't clutter xda with new threads covering the same old topics.
Also your first post doesn't even mention you want to do this without unlocking bootloader so at least give all relevant info in your initial question.