Specify the exact commit when triggering multi-gpu pipeline (#58219)
Summary:
Previously only the **branch** is specified when triggering the multi-gpu pipeline, which could result in incorrect commit being targeted, because when the pipeline actually runs there could be newer commit on the specified branch.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/58219
Reviewed By: malfet, bdhirsh
Differential Revision: D28446453
Pulled By: seemethere
fbshipit-source-id: 680c0b3a9f3f20b61787cc90fda73b87d66e6af8
