[bc test] pull nightly from before the base commit (#79570)
Fixes #79146
Test plan:
https://github.com/pytorch/pytorch/runs/6902235940?check_suite_focus=true passes and installs yesterday's nightly
new test also passes: https://github.com/pytorch/pytorch/runs/6903723789?check_suite_focus=true#step:9:640
Pull Request resolved: https://github.com/pytorch/pytorch/pull/79570
Approved by: https://github.com/malfet, https://github.com/albanD
