Looks Like Knit Reversible Crochet Branch Stitch 1 Row Repeat Crochet Brioche.

This tutorial teaches how to create a reversible \"branch stitch\" crochet pattern. The design is characterized by a braided, knit-like texture and is created using a one-row repeat of short row segments. The entire project relies on a single basic stitch—the yarn over slip stitch—worked exclusively into the back loops to achieve a ribbed effect.