Realistically there's no way for Tsegay to beat Chebet. But her best tactic would be a super slow race where she starts to kick from 1500m out. Not a sprint.
The race in 2022 is totally meaningless -- Hassan was morbidly out of shape and Chebet was still super young and inexperienced. Tsegay's closing splits in that race would not have resulted in a medal of any color in the championship races that have followed.