fatal: Could not parse object '89443141c9e6b3a6032054ef98bd4133292bc15f'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 8944314 Removed faulty trailing slash.
89443141c9e6b3a6032054ef98bd4133292bc15f