$ git clone -n https://src.fedoraproject.org/rpms/octave-specfun.git /var/lib/mock/f40-build-2013643-45908/root/chroot_tmpdir/scmroot/octave-specfun
Cloning into '/var/lib/mock/f40-build-2013643-45908/root/chroot_tmpdir/scmroot/octave-specfun'...
$ git fetch origin b8f48763d5a0984ffba2fb040a829a66cee397a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/octave-specfun
 * [new ref]         b8f48763d5a0984ffba2fb040a829a66cee397a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8f4876 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild