Rollbacks rhymes with:
fullbacks, pricklebacks, pullbacks, buybacks, comebacks, cutbacks, drawbacks, flashbacks, fullbacks, givebacks, greenback's, greenbacks, halfbacks, kickbacks, leasebacks, leatherbacks, paperbacks, paybacks, pricklebacks, pullbacks, quarterbacks, razorback's, razorbacks, setbacks
Rollbacks sounds like:
railbike, ralph's, ralphs, relapse, relapses, reliefs, relieves, roelofs, rohlfs, rolfes, rolfs, rollback, rulebook