fatal: Could not parse object 'a4fd68506982ea7f9be4b0e356ee7d14ebf866eb'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at a4fd685 Fixed path to destination for doxygen.
a4fd68506982ea7f9be4b0e356ee7d14ebf866eb