$ git clone -n https://src.fedoraproject.org/rpms/spectra.git /var/lib/mock/f42-build-3402201-45132/root/chroot_tmpdir/scmroot/spectra
Cloning into '/var/lib/mock/f42-build-3402201-45132/root/chroot_tmpdir/scmroot/spectra'...
$ git fetch origin d2fd8af86e9c4ee7a90f6a0e0b9f61204d2221ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/spectra
 * [new ref]         d2fd8af86e9c4ee7a90f6a0e0b9f61204d2221ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d2fd8af Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild