$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-CPAN-Changes.git /var/lib/mock/dist-oc9-build-71076-47514/root/chroot_tmpdir/scmroot/perl-CPAN-Changes
Cloning into '/var/lib/mock/dist-oc9-build-71076-47514/root/chroot_tmpdir/scmroot/perl-CPAN-Changes'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-CPAN-Changes
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb2a03c import perl-CPAN-Changes-0.400002-5.tl4