fatal: Could not parse object '9517894d1e6180093a2f972c26fce12580a36cb8'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 9517894 Removed non-ascii character from header.
9517894d1e6180093a2f972c26fce12580a36cb8