$ git clone -n https://src.fedoraproject.org/rpms/kiriki.git /var/lib/mock/f40-build-2296861-56419/root/chroot_tmpdir/scmroot/kiriki
Cloning into '/var/lib/mock/f40-build-2296861-56419/root/chroot_tmpdir/scmroot/kiriki'...
$ git fetch origin 4839b8b71be10f9dbf846d0cc321968485e8398e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiriki
 * [new ref]         4839b8b71be10f9dbf846d0cc321968485e8398e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4839b8b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild