$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-DateTime.git /var/lib/mock/dist-oc9-build-134781-78885/root/chroot_tmpdir/scmroot/perl-DateTime
Cloning into '/var/lib/mock/dist-oc9-build-134781-78885/root/chroot_tmpdir/scmroot/perl-DateTime'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-DateTime
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 484b3ca import perl-DateTime-1.58-7.tl4