$ git clone -n https://src.fedoraproject.org/rpms/perl-Math-FFT.git /var/lib/mock/f40-build-779526-130368/root/chroot_tmpdir/scmroot/perl-Math-FFT
Cloning into '/var/lib/mock/f40-build-779526-130368/root/chroot_tmpdir/scmroot/perl-Math-FFT'...
$ git fetch origin 0f1064f30f9cd85b72bcd874b656e6aedefa224e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Math-FFT
 * [new ref]         0f1064f30f9cd85b72bcd874b656e6aedefa224e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0f1064f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild