Print torch git version (commit) in workflow (#1779)
Summary:
Print out the version so we can easily know which torch nightly we're running the regressions in the workflow.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1779
Reviewed By: xuzhao9
Differential Revision: D47728924
Pulled By: janeyx99
fbshipit-source-id: a0b048e8656c2aca120896b9208062b62ae687b8
