fatal: Could not parse object '4f80316ed328a9e9cbefdd93bb101b261ea5657f'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 4f80316 Undo addition of FileHelpers (it broke the build)
4f80316ed328a9e9cbefdd93bb101b261ea5657f