$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/rpm-ostree /var/lib/mock/dist-el8-build-5650-34/root/chroot_tmpdir/scmroot/rpm-ostree
Cloning into '/var/lib/mock/dist-el8-build-5650-34/root/chroot_tmpdir/scmroot/rpm-ostree'...
$ git reset --hard origin/a8
HEAD is now at 83e6f7f import rpm-ostree-2019.6-8.el8.src.rpm