040000 tree 637faac02a44ca548a89d0bd62236ebc739657d3	gcc-10
040000 tree 4625262ee356584fbcb5040617f883b67cdda038	gcc-7.5.0
040000 tree 2e137909f70d99e85cac7e7f7365d700a902fa09	gcc-9.3.0
040000 tree c65c9c7cd33d08cdeae375d015e27a84d0f5519d	gcc-9.3.1