Test 1:
root@pine64so:/mnt/1T/sync# md5sum GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/drugi500G/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt/drugi500G/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/drugi500G/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/treci500G//gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt//gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/drugi500G/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/treci500G/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/prvi500G/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt//gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/drugi500G/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/prvi500G/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/treci500G/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/1T/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt/*/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/1T/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/drugi500G/gh/slike/GOOD.zip
944260b3d717b9ab7bdc965d2bbe53be  /mnt/prvi500G/gh/slike/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/treci500G/gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  GOOD.zip
root@pine64so:/mnt/1T/sync#

Drugi test: 
root@pine64so:/mnt/1T/sync# md5sum GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/1T/GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/prvi500G//GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt//gh/slike/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt//GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/1T/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/prvi500G/GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/drugi500G/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt//GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/1T/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/drugi500G/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/prvi500G/GOOD.zip
root@pine64so:/mnt/1T/sync# rsync /mnt/1T/sync/GOOD.zip /mnt/treci500G/GOOD.zip
root@pine64so:/mnt/1T/sync# md5sum /mnt/*/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/1T/GOOD.zip
1426bcb0be50deb861bee9045f8955af  /mnt/drugi500G/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/prvi500G/GOOD.zip
3254c5ae98ccd4294f0ab8d3bce58768  /mnt/treci500G/GOOD.zip