Venus Optics will soon release the LAOWA 9mm f/2.8 Zero-D APS-C lens for Nikon Z mount (the lens already exists for other mirrorless mounts):
Additional information on the Venus Optics LAOWA 9mm f/2.8 Zero-D APS-C lens can be found here:
Venus Optics Laowa 9mm f/2.8 ZERO-D APS-C lens officially announced
Venus Optics Laowa 9mm f/2.8 ZERO-D APS-C mirrorless lens additional coverage