When pull.rebase is set, start rebase just after fetch, not after OK button

When pull.rebase is set, first is started the fetch process and after fetch is done, dialog with buttons ShowLog and OK is shown. When I press ShowLog, the log is shown for fetch and at the same time the rebase process is started.

I would like to be rebase process started just after fetch. I do not know if it will ever be possible, because of CProgressDlg.