fatal: Could not parse object '6e0fb2ee884fd65b6ab1cb49ed148c96802d21f9'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 6e0fb2e Disabled HillTest in CMake, and reverted source file to uncommented version.
6e0fb2ee884fd65b6ab1cb49ed148c96802d21f9