$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/ostree /var/lib/mock/dist-el8-build-5461-34/root/chroot_tmpdir/scmroot/ostree
Cloning into '/var/lib/mock/dist-el8-build-5461-34/root/chroot_tmpdir/scmroot/ostree'...
$ git reset --hard origin/a8
HEAD is now at b62e59d import ostree-2019.6-2.el8.src.rpm