Always unpack resources if buck repo is dirty
Always unpack resources if buck repo is dirty

Summary: During the buck local development buck version is fixed and remains the same all the time, also fake fersion could be unset, so if the buck repo is dirty we should always update resources

Reviewed By: cjhopman

shipit-source-id: 16a10820b4294f745f67f868d3d286e99f3ed931

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