fatal: Could not parse object '84ec1f86175f1e839fe9b6cfe144006af723c6d3'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 84ec1f8 Added tension members to stabilize front vertebra, so it doesn't passively swing. Also shifted relative position of body and legs a bit for better interplay.
84ec1f86175f1e839fe9b6cfe144006af723c6d3