fatal: Could not parse object '91803519c69185b961ef7d0837b744557eae7969'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 9180351 Update STL Parser README
91803519c69185b961ef7d0837b744557eae7969