Mirror/Backup from SSH/SFTP to Windows

What I am trying to do is mirror a directory (recursively) from a server I can SSH/SFTP to, to a Windows machine. I want to do this as part of a script, so it can be automated.

I only want to copy new or modified files. I don't want to have to download all the files every time the script runs.

In other words, I'm trying to get the equivalent of RoboCopy /MIR that will work using SFTP as a source.

What would you recommend?

WinSCP can synchronize directories using /synchronize or with a script.

Mount your SFTP server as a drive using SFTPNetDrive then robocopy as regular (probably with /Z).