$ git clone -n https://gitee.com/src-opencloudos-rpms/libisoburn.git /var/lib/mock/dist-oc9-build-128249-77234/root/chroot_tmpdir/scmroot/libisoburn
Cloning into '/var/lib/mock/dist-oc9-build-128249-77234/root/chroot_tmpdir/scmroot/libisoburn'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libisoburn
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a9dc4fe import libisoburn-1.5.6-4.tl4