It currently uses the UUID of the original collection when creating the temp chunks and temp coll:

https://github.com/mongodb/mongo/blob/b46ac14ee3895b8129069c8f1b03e3820ebcea99/src/mongo/db/s/resharding/resharding_coordinator_service.cpp#L568

https://github.com/mongodb/mongo/blob/b46ac14ee3895b8129069c8f1b03e3820ebcea99/src/mongo/db/s/resharding/resharding_coordinator_service.cpp#L713

https://github.com/mongodb/mongo/blob/b46ac14ee3895b8129069c8f1b03e3820ebcea99/src/mongo/db/s/resharding/resharding_coordinator_service.cpp#L755

This can potentially cause issues with the new catalog cache refresh pipeline:
https://github.com/mongodb/mongo/blob/2957e50d04bf5eb2d3ad2aabdd37f8a63b10835d/src/mongo/s/catalog/sharding_catalog_client_impl.cpp#L348