--- /dev/null
+#!/bin/sh -ex
+
+
+# Populate with some arbitrary files from the local system. Take
+# a copy to protect against false fails from system updates during test.
+export PAYLOAD=/tmp/multiple_rsync_payload.$$
+sudo cp -r /usr/lib/ $PAYLOAD
+
+set -e
+
+sudo rsync -av $PAYLOAD payload.1
+sudo rsync -av $PAYLOAD payload.2
+
+# this shouldn't transfer any additional files
+echo we should get 4 here if no additional files are transferred
+sudo rsync -auv $PAYLOAD payload.1 | tee /tmp/$$
+hexdump -C /tmp/$$
+wc -l /tmp/$$ | grep 4
+sudo rsync -auv $PAYLOAD payload.2 | tee /tmp/$$
+hexdump -C /tmp/$$
+wc -l /tmp/$$ | grep 4
+echo OK
+
+rm /tmp/$$
+sudo rm -rf $PAYLOAD