$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/istack-commons /var/lib/mock/dist-el8-build-7965-873/root/chroot_tmpdir/scmroot/istack-commons
Cloning into '/var/lib/mock/dist-el8-build-7965-873/root/chroot_tmpdir/scmroot/istack-commons'...
$ git reset --hard origin/a8
HEAD is now at f191792 import istack-commons-2.21-9.el8+7.src.rpm