$ git clone -n https://src.fedoraproject.org/rpms/R-roxygen2.git /var/lib/mock/f40-build-2323849-58742/root/chroot_tmpdir/scmroot/R-roxygen2
Cloning into '/var/lib/mock/f40-build-2323849-58742/root/chroot_tmpdir/scmroot/R-roxygen2'...
$ git fetch origin cf30db55edee67e941a3bea026fdb5ae97ee52e1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-roxygen2
 * [new ref]         cf30db55edee67e941a3bea026fdb5ae97ee52e1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf30db5 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild