fatal: Could not parse object '6d31dc1620b6a5f3060847a1191e288749d5d057'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 6d31dc1 add basic yaml validation
6d31dc1620b6a5f3060847a1191e288749d5d057