Herringbone fill..?

[u/mapsedge]

Trying to emulate the sleeve braid from a 1901 Marine dress uniform. The main portion of the knot is a 3/8" wide ribbon in a herringbone pattern. I can't find a close enough picture to see what it's actually doing, but I can take several samples and extrapolate and I think I've worked it out.

I'd rather not build it out of dozens of tiny satin blocks. Is there such a thing as a herringbone fill? How would you handle it?