RELENG-269: MG & other repos that do git checkouts should checkout --depth 1 for speed
RELENG-269: MG & other repos that do git checkouts should checkout --depth 1 for speed

numericillustration/sdc-headnode,kaizengarden/sdc-headnode,numericillustration/sdc-headnode,joyent/sdc-headnode,kaizengarden/sdc-headnode,joyent/sdc-headnode,joyent/sdc-headnode,kaizengarden/sdc-headnode,numericillustration/sdc-headnode,joyent/sdc-headnode,kaizengarden/sdc-headnode