$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/grub2 /var/lib/mock/dist-el8-build-315-27/root/chroot_tmpdir/scmroot/grub2
Cloning into '/var/lib/mock/dist-el8-build-315-27/root/chroot_tmpdir/scmroot/grub2'...
$ git reset --hard origin/a8
HEAD is now at bb27ac5 import grub2-2.02-81.el8.src.rpm