This is both more accurate and also more stable: The suffix-list
update usually takes several days to go through all branches; using
the commit date avoids using newer fetch dates in older branches.
Pick-to: 6.8 6.5 6.2 5.15
Change-Id: Ifefd7158e4104c7bbdfe6a2d8a505d8acf7275b4
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
(cherry picked from commit cbea57f80b43a969d2e15d53b759abb9924d52c1)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>