Temporary erosion control

Hello friends. I just had a new part of my property cut into a swale on contour. It sure is terrific and I now have quite a thing for laser levels!!! The fellow that did the construction pushed the debris down the hillside and left it for me to use later. The problem is there is now a downhill bare spot that I need erosion control. But, I only need it until I put a roadway in. So no Swales or permanent erosion control methods. I'm thinking of hitting it with cowpeas, and buckwheat. That will get me until fall to get the road put in. However, I would love to hear what the permaculture community thinks. Thank you.

Any way to mulch it? Not just with fine stuff like leaves or grass clippings but coarser stuff like brush, twigs, long straw, etc. Even coarse fabric like coffee bags. This will catch fine stuff and resist washing away themselves..... If there are any logs or heavy branches handy, throw these down roughly on contour and they will help too....

A cover crop is the easiest.

A heavy layer of straw mulch is the fastest.

My shout would be for a cover crop... depends a bit on your overall time horizon for getting the road in though.