$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-DBD-Pg.git /var/lib/mock/dist-oc9-build-43479-14591/root/chroot_tmpdir/scmroot/perl-DBD-Pg
Cloning into '/var/lib/mock/dist-oc9-build-43479-14591/root/chroot_tmpdir/scmroot/perl-DBD-Pg'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-DBD-Pg
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a2b25e7 import perl-DBD-Pg-3.16.0-3.tl4