$ git clone -n https://src.fedoraproject.org/rpms/R-R.cache.git /var/lib/mock/f40-build-2322058-58630/root/chroot_tmpdir/scmroot/R-R.cache
Cloning into '/var/lib/mock/f40-build-2322058-58630/root/chroot_tmpdir/scmroot/R-R.cache'...
$ git fetch origin 9131c75b2e08fc856fed0ab26337b101ded88db7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-R.cache
 * [new ref]         9131c75b2e08fc856fed0ab26337b101ded88db7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9131c75 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild