fatal: Could not parse object '1a56f8c7cc007de28257f47676375c7e7dbc160d'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 1a56f8c some adjustments to stiffness in feet.
1a56f8c7cc007de28257f47676375c7e7dbc160d