https://parsley.mongodb.com/resmoke/7cfdaf9a3149e7700db387be776ee626/all?bookmarks=0,577073&shareLine=573444

The key phrase is: "checkReplicatedDataHashes, the two nodes have a different hash for the collection test.system.buckets.timeseries_internal_bounded_sort"

This is the destination cluster in a mongosync run. Notably, mongosync creates time-series collections by creating a system.buckets.mongosync.tmp.$srcUUID collection, then renaming it to the correct system.buckets name, then creating the view separately. That may be part of the cause.