Update the ticket git repo after having sent the notifications
On pagure.io some project fail to update their ticket git repo because
of "too many files open" errors.
But they also fail to send notification about the new comment added to
the database.
With this fix, they should be able to get the notification regardless of
whether pagure could update successfully the ticket git repository.
Fixes https://pagure.io/pagure/issue/3973
Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>