$ git clone -n https://src.fedoraproject.org/rpms/fielding.git /var/lib/mock/f45-build-8927-397/root/chroot_tmpdir/scmroot/fielding
Cloning into '/var/lib/mock/f45-build-8927-397/root/chroot_tmpdir/scmroot/fielding'...
$ git fetch origin 018faf353e0d569065db2b34842413da115f82f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fielding
 * [new ref]         018faf353e0d569065db2b34842413da115f82f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 018faf3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild