.circleci: Ensure describe happens in pytorch repo (#35065)
Summary:
Found an issue where the git describe wasn't properly executed since the
binary_populate_env.sh script was being executed from a different
directory.
'git -C' forces the describe to run in the running directory for the
script which should contain the correct git information
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/35065
Differential Revision: D20603172
Pulled By: seemethere
fbshipit-source-id: b19112ce4cb2dc45fbb3f84dedc4f1d3f2259748
