$ git clone -n https://gitee.com/src-opencloudos-rpms/emacs.git /var/lib/mock/dist-oc8-build-36930-12041/root/chroot_tmpdir/scmroot/emacs
Cloning into '/var/lib/mock/dist-oc8-build-36930-12041/root/chroot_tmpdir/scmroot/emacs'...
$ git reset --hard origin/oc8
HEAD is now at 3279319 import emacs-26.1-7.oc8.1