This is a clip designed to hold the anker link cable for an Oculus Quest V2 with stock strap - cable available here: https://www.amazon.com/gp/product/B01MZIPYPY/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
It's a remix of the open clip from this model on thingiverse: https://www.thingiverse.com/thing:4625786, just able to hold the larger cable.
The author remixed this model.