A friend of mine is working on writing a description of a textile, and is having trouble describing the hem. I’ve seen similar turned-scallop technique in San-Blas applique, but I don’t know if there’s an English term that describes this.
This is showing the back. You can see where the brighter printed color from the front is turned over and hand-stitched down in a little reverse scallop.
Here’s a close-up. The textile comes from Rajasthan, in India. I did find this post, which shows pictures that look like they have a similar edge.