make wildcards alias only each other (#20670)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20670
ghimport-source-id: f5704c49fcb829e4668441f31fcf9305da22335c
Reviewed By: jamesr66a
Differential Revision: D15447567
Pulled By: suo
fbshipit-source-id: 391236806838de2524410e26946456441e562470
