Submodule 'sw/ext/chibios' (https://github.com/ChibiOS/ChibiOS.git) registered for path 'sw/ext/chibios'
Submodule 'sw/ext/fatfs' (https://github.com/enacuavlab/fatfs.git) registered for path 'sw/ext/fatfs'
Submodule 'sw/ext/libopencm3' (https://github.com/libopencm3/libopencm3.git) registered for path 'sw/ext/libopencm3'
Submodule 'sw/ext/libsbp' (https://github.com/swift-nav/libsbp.git) registered for path 'sw/ext/libsbp'
Submodule 'sw/ext/libzbar' (https://github.com/paparazzi/libzbar) registered for path 'sw/ext/libzbar'
Submodule 'sw/ext/luftboot' (https://github.com/paparazzi/luftboot.git) registered for path 'sw/ext/luftboot'
Submodule 'sw/ext/mavlink' (https://github.com/paparazzi/mavlink.git) registered for path 'sw/ext/mavlink'
Submodule 'sw/ext/opencv_bebop' (https://github.com/tudelft/opencv_bebop.git) registered for path 'sw/ext/opencv_bebop'
Submodule 'sw/ext/pprzlink' (https://github.com/paparazzi/pprzlink.git) registered for path 'sw/ext/pprzlink'
error: no such remote ref 3a6e100efce969b984958f78c13f1c770e5fb730
Fetched in submodule path 'sw/ext/chibios', but it did not contain 3a6e100efce969b984958f78c13f1c770e5fb730. Direct fetching of that commit failed.