$ git clone -n https://src.fedoraproject.org/rpms/R-pkgload.git /var/lib/mock/f40-build-2270263-54801/root/chroot_tmpdir/scmroot/R-pkgload
Cloning into '/var/lib/mock/f40-build-2270263-54801/root/chroot_tmpdir/scmroot/R-pkgload'...
$ git fetch origin 66f0cf2adc09028914302ef4fea3fddd7ff0d158:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-pkgload
 * [new ref]         66f0cf2adc09028914302ef4fea3fddd7ff0d158 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66f0cf2 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild