$ git clone -n https://gitee.com/src-opencloudos-rpms/libaec.git /var/lib/mock/dist-oc9-build-120944-71503/root/chroot_tmpdir/scmroot/libaec
Cloning into '/var/lib/mock/dist-oc9-build-120944-71503/root/chroot_tmpdir/scmroot/libaec'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libaec
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0aa4325 import libaec-1.1.2-3.tl4