$ git clone -n https://gitee.com/src-opencloudos-rpms/libdwarf.git /var/lib/mock/dist-oc9-build-121900-71843/root/chroot_tmpdir/scmroot/libdwarf
Cloning into '/var/lib/mock/dist-oc9-build-121900-71843/root/chroot_tmpdir/scmroot/libdwarf'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libdwarf
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1abd21 import libdwarf-0.9.2-3.tl4