$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Error.git /var/lib/mock/dist-oc9-build-71151-47522/root/chroot_tmpdir/scmroot/perl-Error
Cloning into '/var/lib/mock/dist-oc9-build-71151-47522/root/chroot_tmpdir/scmroot/perl-Error'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Error
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad5a12b import perl-Error-0.17029-5.tl4