$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-CPAN.git /var/lib/mock/dist-oc8-build-74002-49488/root/chroot_tmpdir/scmroot/perl-CPAN
Cloning into '/var/lib/mock/dist-oc8-build-74002-49488/root/chroot_tmpdir/scmroot/perl-CPAN'...
$ git fetch origin b3199129022da8bfe77edbab925fb473eed368bd:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-CPAN
 * [new ref]         b3199129022da8bfe77edbab925fb473eed368bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b319912 import perl-CPAN-2.18-399.tl3