fatal: Could not parse object '9cf8696eccae40dc24018796b67dd183e4a2efe6'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 9cf8696 Add drop simulation yaml file
9cf8696eccae40dc24018796b67dd183e4a2efe6