$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Variable-Magic.git /var/lib/mock/dist-oc9-build-134919-78885/root/chroot_tmpdir/scmroot/perl-Variable-Magic
Cloning into '/var/lib/mock/dist-oc9-build-134919-78885/root/chroot_tmpdir/scmroot/perl-Variable-Magic'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Variable-Magic
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dfcc8be import perl-Variable-Magic-0.63-3.tl4