Too bad there’s no rsync for windows
https://docs.microsoft.com/en-us/windows-server/administrati...
https://heejune.me/2018/08/02/setup-rsync-server-over-ssh-on...
[ edit ] if that and cygwin are too heavy, you could request the samba team create a posix windows build of rsync. They had one long ago, but stopped supporting it. That would be a single binary. I suspect they will push back.
I found a Github repo with an older (2017) version of cwRsync that may be from before it went behind a paywall @ https://github.com/billyc/cwrsync-installer
You can run a local console and rsync directly from your window drives (/drives)