$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/ipxe.git /var/lib/mock/dist-an7-build-28404-15253/root/chroot_tmpdir/scmroot/ipxe
Cloning into '/var/lib/mock/dist-an7-build-28404-15253/root/chroot_tmpdir/scmroot/ipxe'...
$ git reset --hard origin/a7
HEAD is now at 305f2da import ipxe-20180825-2.git133f4c.el7.src.rpm