The x262 repository (on VideoLAN) is using the old x264 hashes. Keeping it in sync with upstream x264 became much more difficult after x264's history was rewritten and especially after 8/10-bit unification.

What I've done is rebased (bug for bug) the legacy code from 2015 onto current x264/master and then added all the things I wish I could have done 10 years ago.