Read the man file for rsync,
And look specifically for these two options:
skip creating new files on receiver
Copy the files you want manually, then on the next runs rsync will copy those files only.
read list of source-file names from FILE
Using this option allows you to specify the exact list of files to transfer (as read from the specified FILE or - for standard input). It also tweaks the default behavior of rsync to make transferring just the specified files and directories easier:
Read the man page.