$ git clone -n https://src.fedoraproject.org/rpms/emacs-bbdb.git /var/lib/mock/f40-build-2284852-55657/root/chroot_tmpdir/scmroot/emacs-bbdb
Cloning into '/var/lib/mock/f40-build-2284852-55657/root/chroot_tmpdir/scmroot/emacs-bbdb'...
$ git fetch origin 8a9871bad57d298f9b60cf71ec0d6ecd89596689:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/emacs-bbdb
 * [new ref]         8a9871bad57d298f9b60cf71ec0d6ecd89596689 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8a9871b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild