$ git clone -n https://gitee.com/src-opencloudos-rpms/libpaper.git /var/lib/mock/dist-oc9-build-42424-14591/root/chroot_tmpdir/scmroot/libpaper
Cloning into '/var/lib/mock/dist-oc9-build-42424-14591/root/chroot_tmpdir/scmroot/libpaper'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libpaper
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aed7821 import libpaper-1.1.28-3.tl4