$ git clone -n https://src.fedoraproject.org/rpms/kiss-fft.git /var/lib/mock/f45-build-15211-470/root/chroot_tmpdir/scmroot/kiss-fft
Cloning into '/var/lib/mock/f45-build-15211-470/root/chroot_tmpdir/scmroot/kiss-fft'...
$ git fetch origin 66ee95d04d86d0dd25b1e514267599752f3a1af9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiss-fft
 * [new ref]         66ee95d04d86d0dd25b1e514267599752f3a1af9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66ee95d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild