$ git clone -n https://src.fedoraproject.org/rpms/R-broom.git /var/lib/mock/f40-build-2339734-59672/root/chroot_tmpdir/scmroot/R-broom
Cloning into '/var/lib/mock/f40-build-2339734-59672/root/chroot_tmpdir/scmroot/R-broom'...
$ git fetch origin d383192d8845f52e7c8acbd92dc9a8c895772dcc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/R-broom
 * [new ref]         d383192d8845f52e7c8acbd92dc9a8c895772dcc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d383192 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild