$ git clone -n https://src.fedoraproject.org/rpms/R-nws.git /var/lib/mock/f40-build-2270211-54796/root/chroot_tmpdir/scmroot/R-nws
Cloning into '/var/lib/mock/f40-build-2270211-54796/root/chroot_tmpdir/scmroot/R-nws'...
$ git fetch origin 7bfcf0dcccc9150737676c7236dba9dda72988ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-nws
 * [new ref]         7bfcf0dcccc9150737676c7236dba9dda72988ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7bfcf0d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild