fatal: Could not parse object '56f8706e34b97a569853ad5a880d885682009142'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 56f8706 Renamed files
56f8706e34b97a569853ad5a880d885682009142