$RSYNC -av --existing -f 'exclude,! */' from1/ chk/
$RSYNC -av --existing -f 'exclude,! */' from3/ chk/
-checkit "$RSYNC -avvvv deep/arg-test shallow from1/ from2/ from3/ to/" chk to
+checkit "$RSYNC -avv deep/arg-test shallow from1/ from2/ from3/ to/" "$chkdir" "$todir"
# The script would have aborted on error, so getting here means we've won.
exit 0