$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-Carp-Clan.git /var/lib/mock/dist-oc9-build-58520-16463/root/chroot_tmpdir/scmroot/perl-Carp-Clan
Cloning into '/var/lib/mock/dist-oc9-build-58520-16463/root/chroot_tmpdir/scmroot/perl-Carp-Clan'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-Carp-Clan
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f8096c7 import perl-Carp-Clan-6.08-5.tl4