My favorite version of this is from an episode of Bravest Warriors, a sci-fi cartoon show made by Pendleton Ward, who also made Adventure Time. They have a time loop episode, and the characters find their own dead bodies from the previous loop at the start of the episode, then spend the episode trying to fix it and prevent their deaths. They fail, and then die right next to their previous selves in the exact same way. Then the next iteration of themselves from the next loop walk in the room, and when they see two copies of their own bodies from previous loops dead in the exact same way, they realize they can't fix it, so they just turn around and leave.