Checkout file from S3 instead of git lfs (#1158)
Summary:
git-lfs seems to be unstable when working cross-repository (showing auth error). Since our demand is very simple, let's use S3 instead to manage the input data.
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1158
Reviewed By: desertfire
Differential Revision: D39279060
Pulled By: xuzhao9
fbshipit-source-id: 3e2115867402847ddd7be81ebc50719a2fd95e80
