040000 tree 79dee8a4215018c357453ead3260c7a4b0179e05	v0.alpha
040000 tree 5f07412f790896d87622c47280de2fdd1acb2e60	v0.beta
040000 tree 4f9cc53fd53668ac8ce64bd59681105e1d47d682	vm_alpha
040000 tree 37554fffddb303c725a022bea2930777e54d4dc2	vm_beta