Nightly checkout tool (#42635)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/40829
This is cross-platform but I have only tried it on linux, personally. Also, I am not fully certain of the usage pattern, so if there are any additional features / adjustments / tests that you want me to add, please just let me know!
CC ezyang rgommers
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42635
Reviewed By: zhangguanheng66
Differential Revision: D23078663
Pulled By: ezyang
fbshipit-source-id: 5c8c8abebd1d462409c22dc4301afcd8080922bb
