$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-ExtUtils-CBuilder.git /var/lib/mock/dist-oc9-build-71157-47524/root/chroot_tmpdir/scmroot/perl-ExtUtils-CBuilder
Cloning into '/var/lib/mock/dist-oc9-build-71157-47524/root/chroot_tmpdir/scmroot/perl-ExtUtils-CBuilder'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-ExtUtils-CBuilder
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ed79190 import perl-ExtUtils-CBuilder-0.280236-6.tl4