$ git clone -n https://src.fedoraproject.org/rpms/docbook-utils.git /var/lib/mock/f41-build-1018465-17947/root/chroot_tmpdir/scmroot/docbook-utils
Cloning into '/var/lib/mock/f41-build-1018465-17947/root/chroot_tmpdir/scmroot/docbook-utils'...
$ git fetch origin 2226711d2bb9f2d45c287e1d0c069b931dec8fa8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/docbook-utils
 * [new ref]         2226711d2bb9f2d45c287e1d0c069b931dec8fa8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2226711 Eliminate use of obsolete %patchN syntax (#2283636)