$ git clone -n https://gitee.com/opencloudos-stream/perl-Class-Unload.git /var/lib/mock/dist-oc9-epol-build-85959-57604/root/chroot_tmpdir/scmroot/perl-Class-Unload
Cloning into '/var/lib/mock/dist-oc9-epol-build-85959-57604/root/chroot_tmpdir/scmroot/perl-Class-Unload'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/perl-Class-Unload
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14232bb update