$ git clone -n https://src.fedoraproject.org/rpms/R-fontBitstreamVera.git /var/lib/mock/f45-build-6046-346/root/chroot_tmpdir/scmroot/R-fontBitstreamVera
Cloning into '/var/lib/mock/f45-build-6046-346/root/chroot_tmpdir/scmroot/R-fontBitstreamVera'...
$ git fetch origin 91c5886714696a9c33184f577e76032690868a09:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-fontBitstreamVera
 * [new ref]         91c5886714696a9c33184f577e76032690868a09 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 91c5886 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild