Hood Hinge Pin gone

The wind in our area was so strong that it blew my hood up and off the hinge pin on the driver's side. Upon replacing it I realized there was NO hinge pin. I assume it was spot welded on. How do I replace it and with what? Does the fender have to be removed? Need some advice from you pros.

Did you ever solve this problem? Mine top one just busted free. Took the fender off but still can’t reach the pin. It’s behind sheet metal on the kick panel.