$ git clone -n git+ssh://git@codeup.openanolis.cn/codeup/anolis-os/grub2.git /var/lib/mock/dist-an7-build-37859-17915/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-an7-build-37859-17915/root/chroot_tmpdir/scmroot/grub2'...
$ git reset --hard origin/a7-os
HEAD is now at a19af73 import grub2-2.02-0.80.el7.src.rpm