Official RHEL repo sync

hello everybody,
please I need to Update a repo on my Nexus, it is an official redhat repo named:

rhel-8-for-x86_64-appstream-rpms

Now to do this, I sync it in a local server that it can access to the RedHat repo, with this command:

reposync -n -p /data --download-metadata --repo=rhel-8-for-x86_64-appstream-rpms

and only after this I copy the entire repo to my Nexus, with this:

find . -type f -exec curl -v -k --user ‘user:pwd’ -T {} name.it - name Resources and Information. ;

The problem is that the entire repo sizing 63GB and I am unable tu push only the new or changed rpm.
There is a chance to sync the Nexus directly with the redhat pubblic repo ?

thank you very much for every contributes,
regards
Stefano