$ git clone -n https://gitee.com/src-opencloudos-rpms/libical.git /var/lib/mock/dist-oc9-build-58325-16463/root/chroot_tmpdir/scmroot/libical
Cloning into '/var/lib/mock/dist-oc9-build-58325-16463/root/chroot_tmpdir/scmroot/libical'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libical
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2127efa import libical-3.0.16-4.tl4