You can mount the flash on the camera's cold shoe, then cable it to the lens's PC (prontor-compur) sync port with a 2.5mm to PC cable.
But if you want to use the V1 off-camera, it might be better to use that cable and cold shoe for a Godox Pro transmitter. Godox's transmitters let you set the sync port to IN from a camera or meter to send out the triggering signal (as well as to OUT to cable directly to a strobe). You could then use the V1's built-in radio transceiver for wireless triggering from the transmitter.
Obviously, you won't have TTL or HSS. But you should still retain group/M power control over the V1.
You need a PC to 2.5mm cable to connect the PC (Prontor-Compur) socket on the lens to the 2.5mm sync port on the XPro-C. On the XPro-C, the SYNC custom function has to be set to IN.
If you have multiple choices of two PC sync ports on a medium format body or lens, choose the one labeled "X" sync (it's the one for electronic Xenon bulb flashes, not single-used flash bulbs).
Maybe this will work. It's a 2.5mm plug. Simple Amazon search.