$ git clone -n https://src.fedoraproject.org/rpms/R-widgetTools.git /var/lib/mock/f39-build-1535670-36247/root/chroot_tmpdir/scmroot/R-widgetTools
Cloning into '/var/lib/mock/f39-build-1535670-36247/root/chroot_tmpdir/scmroot/R-widgetTools'...
$ git fetch origin 5a8bc85cc19ceb174161757fd6af46fa0889ab65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-widgetTools
 * [new ref]         5a8bc85cc19ceb174161757fd6af46fa0889ab65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a8bc85 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild