Make nightly checkout work with generated testing py (#54477)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/54477
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Reviewed By: mruberry
Differential Revision: D27263065
Pulled By: ezyang
fbshipit-source-id: 7fa653fb334ff91c9100cf5adcabab6b30533a89
