$ git clone -n https://gitee.com/src-opencloudos-rpms/perl-File-Which.git /var/lib/mock/dist-oc9-build-63305-16463/root/chroot_tmpdir/scmroot/perl-File-Which
Cloning into '/var/lib/mock/dist-oc9-build-63305-16463/root/chroot_tmpdir/scmroot/perl-File-Which'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/perl-File-Which
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 015e55b import perl-File-Which-1.27-5.tl4