$ git clone -n https://src.fedoraproject.org/rpms/R-iterators.git /var/lib/mock/f40-build-2270075-54792/root/chroot_tmpdir/scmroot/R-iterators
Cloning into '/var/lib/mock/f40-build-2270075-54792/root/chroot_tmpdir/scmroot/R-iterators'...
$ git fetch origin acb43985a20609b0dda3180684cf21d9ad5c1350:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-iterators
 * [new ref]         acb43985a20609b0dda3180684cf21d9ad5c1350 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at acb4398 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild