$ whoami
root
$ git clone -n http://8.131.229.236/anolis-os/cairomm /var/lib/mock/dist-el8-build-2345-28/root/chroot_tmpdir/scmroot/cairomm
Cloning into '/var/lib/mock/dist-el8-build-2345-28/root/chroot_tmpdir/scmroot/cairomm'...
$ git reset --hard origin/a8
HEAD is now at 67542f0 import cairomm-1.12.0-7.el8.src.rpm