$ git clone -n https://src.fedoraproject.org/rpms/goffice.git /var/lib/mock/f41-build-855570-167171/root/chroot_tmpdir/scmroot/goffice
Cloning into '/var/lib/mock/f41-build-855570-167171/root/chroot_tmpdir/scmroot/goffice'...
$ git fetch origin ad671f7399d15e7309cfe040a5e0e9cf0fe9800c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/goffice
 * [new ref]         ad671f7399d15e7309cfe040a5e0e9cf0fe9800c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad671f7 Revert ix86-related changes