$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-DBI.git /var/lib/mock/dist-oc9-build-255579-84523/root/chroot_tmpdir/scmroot/perl-DBI
Cloning into '/var/lib/mock/dist-oc9-build-255579-84523/root/chroot_tmpdir/scmroot/perl-DBI'...
$ git fetch origin 4d849bd423cc674ffbcced4d37b8ae172faed9f1:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-DBI
 * [new ref]         4d849bd423cc674ffbcced4d37b8ae172faed9f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d849bd import perl-DBI-1.650-3.tl4