Jason is on so few people's lists of helpful persons that he actually looks to either side of him, then behind, before concluding Thor was sort of generally those in the vicinity. 'Those' happen to be comprised of him.

"You should ask someone from your cohort, maybe." He is just not sure letting Thor know he's in his cohort is a good decision. After a moment of watching Thor looking up at the sky, Jason takes off his hat and offers it to him. The hat that replaces that one looks like a deerstalker.