If the filename on gitlab has a % in it, it is not properly escaped.
For example: search for stylepit:
returns: https://gitlab.com/monopolies/monopolies.net.git//blob/master/logos/bestseller/26%-of-stylepit.svg
instead of https://gitlab.com/monopolies/monopolies.net/-/blob/master/logos/bestseller/26%25-of-stylepit.svg