GNU/Linux Rsync Only New Files – Step by step Guide
How to Rsync Only the New or Latest Files on GNU/Linux – Step by step Tutorial.
And this Command Line Solution use the Time back to get the News Files before Syncing.

Syncing Files
Then to Rsync only the Latest Files
The General Command for Today only entries is like:rsync --progress --files-from=<(find /[PATH2LOCALTDIR] -d -mtime -1;) / [URLREMOTETARGET]
Where to get only the Latest Hour:rsync --progress --files-from=<(find /[PATH2LOCALTDIR] -d -mmin -60;) / [URLREMOTETARGET]
Set [PATH2LOCALTDIR] and [URLREMOTETARGET] as needed.