[ci] only update timestamp if new state (#6862)
[ci] only update timestamp if new state (#6862)

Otherwise, everytime we refresh from batch, we think we have a
new state and the timestamps are useless
cseed/hail,danking/hail,cseed/hail,danking/hail,hail-is/hail,hail-is/hail,danking/hail,hail-is/hail,hail-is/hail,danking/hail,hail-is/hail,danking/hail,cseed/hail,cseed/hail,danking/hail,hail-is/hail,cseed/hail,cseed/hail,cseed/hail,danking/hail,hail-is/hail,cseed/hail,danking/hail,hail-is/hail