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When running "git pw apply --revision N SERIES_ID" it always says
that it applies the newest revision even though it does the correct
thing - it applies the requested one.

This patch fixes the logic to print the correct revision.

This fixes #22
Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>