$ git clone -n https://src.fedoraproject.org/rpms/maxima.git /var/lib/mock/f41-build-772596-13506/root/chroot_tmpdir/scmroot/maxima
Cloning into '/var/lib/mock/f41-build-772596-13506/root/chroot_tmpdir/scmroot/maxima'...
$ git fetch origin 51fd06f65b1ea9060f1f1015b61bbdab6097b7f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maxima
 * [new ref]         51fd06f65b1ea9060f1f1015b61bbdab6097b7f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51fd06f Rebuild for ecl 24.5.10