$ git clone -n https://src.fedoraproject.org/rpms/R-polyclip.git /var/lib/mock/f39-build-1496094-34547/root/chroot_tmpdir/scmroot/R-polyclip
Cloning into '/var/lib/mock/f39-build-1496094-34547/root/chroot_tmpdir/scmroot/R-polyclip'...
$ git fetch origin 7d2eca3f1b84b5a2cb04c56e76d03874a7919fd5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-polyclip
 * [new ref]         7d2eca3f1b84b5a2cb04c56e76d03874a7919fd5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7d2eca3 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild