$ git clone -n https://src.fedoraproject.org/rpms/lilypond-doc.git /var/lib/mock/f45-build-17384-498/root/chroot_tmpdir/scmroot/lilypond-doc
Cloning into '/var/lib/mock/f45-build-17384-498/root/chroot_tmpdir/scmroot/lilypond-doc'...
$ git fetch origin 06319385af7e6f5f16a975b6f25fafbbf1df6483:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lilypond-doc
 * [new ref]         06319385af7e6f5f16a975b6f25fafbbf1df6483 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0631938 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild