fatal: Could not parse object '5039be10a47191e62d74c87c573b8431fe69cb65'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 5039be1 Restored docs which were clobbered in recent merge.
5039be10a47191e62d74c87c573b8431fe69cb65