fatal: Could not parse object '6b21e7034e361ec58948764f6cba3ae342812268'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 6b21e70 Update CMakeLists.txt with new dev directory
6b21e7034e361ec58948764f6cba3ae342812268