Update repo before getting project config
Update repo before getting project config

Summary: Project config appears to be missing sometimes, possibly because repo isn't updated.

Test Plan: changes

Reviewers: anupc

Reviewed By: anupc

Subscribers: changesbot, josiah, kylec

Differential Revision: https://tails.corp.dropbox.com/D210354

dropbox/changes,dropbox/changes,dropbox/changes,dropbox/changes