fatal: Could not parse object '4b7ca81190e4e415f45f5ebc1e6332a9ada75be9'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 4b7ca81 Added shell header template.
4b7ca81190e4e415f45f5ebc1e6332a9ada75be9