fatal: Could not parse object '75e9675e20d836ab7a86c73d2c06008a5111903a'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 75e9675 Clearer comments regarding its purpose
75e9675e20d836ab7a86c73d2c06008a5111903a