$ git clone -n https://src.fedoraproject.org/rpms/libspectrum.git /var/lib/mock/f40-build-2008444-45373/root/chroot_tmpdir/scmroot/libspectrum
Cloning into '/var/lib/mock/f40-build-2008444-45373/root/chroot_tmpdir/scmroot/libspectrum'...
$ git fetch origin 8103bbdacfc3cd9dc5da13246b299ecff388f6c3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libspectrum
 * [new ref]         8103bbdacfc3cd9dc5da13246b299ecff388f6c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8103bbd Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild