$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-B-COW.git /var/lib/mock/dist-oc9-build-129522-77867/root/chroot_tmpdir/scmroot/perl-B-COW
Cloning into '/var/lib/mock/dist-oc9-build-129522-77867/root/chroot_tmpdir/scmroot/perl-B-COW'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-B-COW
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 98c2b8d import perl-B-COW-0.007-3.tl4