How do I push a file built from github actions back to repository

I am using github actions workflow to automatically compile my clojure project (lein uberjar) which will create a UberJAR file. How can I push this file created back into my repository under a particular folder?

For those unfamiliar with clojure, I guess this workflow is similar to how one can automatically build their react project which will create a /build folder. How can we push this /build folder into the /build folder in the repository too?

This may be a common question but I’ve tried to read up examples online and there seems to be many ways of doing, and with many different kind of secrets and it gets really confusing real quick. Any experienced person able to shed light on this? Thanks in advance.