$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Class-Singleton.git /var/lib/mock/dist-oc9-build-43453-14591/root/chroot_tmpdir/scmroot/perl-Class-Singleton
Cloning into '/var/lib/mock/dist-oc9-build-43453-14591/root/chroot_tmpdir/scmroot/perl-Class-Singleton'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Class-Singleton
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 484c08d import perl-Class-Singleton-1.6-3.tl4