fatal: Could not parse object '660cda94373f05f5fb5ce8222b25d9ad46b4a415'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 660cda9 More work on the ULTRA Spine model. This version is messy, but complies and runs.
660cda94373f05f5fb5ce8222b25d9ad46b4a415