On local Win11 machine, I’m using rsync v3.3 through Cygwin and on my remote ubuntu 22.04 machine, I’m using rsync v3.2.7.
I have a source directory in my local machine whilst compare and destination directories in my remote machine. I am comparing (local) source directory with (remote) compare directory and copying differences in (remote) destination directory. However, rsync is giving me error:

--compare-dest arg does not exist: username@remote-server:/absotute/path/to/compare/remote/dir

I am using the following rsync command:

rsync -aumChqP --modify-window=1 --compare-dest=username@remote-server:/absotute/path/to/compare/remote/dir/ /absotute/path/to/source/local/dir/ username@remote-server:/absotute/path/to/destination/remote/dir/