Currently, we have an option of replying a logical oplog on top of the physical backups (https://docs.percona.com/percona-backup-mongodb/usage/point-in-time-recovery.html#from-physical-backups.)

This ticket is about the implementation of the physical oplog "capturing" (and restoring it). See WT Log-based incremental backup: https://source.wiredtiger.com/11.1.0/backup.html#backup_incremental