We need it for loading files directly from one remote server to another one where we have SSH access.
SSH access from a Workstation -> Server1 -> rsync loading files -> Server2
ssh -v username@server1
find an identity SSH key for sure
ssh-add <the_key>
ssh -A username@server1
run with A option for allowing forwarding keys
rsync -azP --exclude '.4y8-folder' --exclude 'file.tar.gz' pub/media/ username@server2:pub/media/
