Well, let's look at the context in the next chapter. I don't think Gojo was reborn, as it would have been at the level of Hiro Mashima. I love Mashima, but still. Gojo died, he was given a period, not an ellipsis, and it would be a huge mistake to revive him. Like some of the people above, I think Sukuna is on the verge of death seeing Gojo's ghost