fatal: Could not parse object '90d0a090f46b73dfc97d8adce92c0acade86ccb2'.
From https://github.com/NASA-Tensegrity-Robotics-Toolkit/NTRTsim
 * branch            master     -> FETCH_HEAD
HEAD is now at 90d0a09 Removed use of namespace std
90d0a090f46b73dfc97d8adce92c0acade86ccb2