When reportupdater was written, it was prepared to have reruns.
But the actual rerun script was not implemented.

It should be something like:

python rerun_reports.py START_DATE END_DATE [REPORT1 REPORT2 REPORT3 ...]

It should create/append to a file in the project folder the reports/dates that should be rerun.
reportupdater would read from that file in the next execution and rerun the reports or mark them to be rerun.