fatal: Could not parse object 'e83f31a7e1d359fc476434711c767dae13f449ac'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at e83f31a Re-fix craterEscape Cmake linker errors
e83f31a7e1d359fc476434711c767dae13f449ac