What I will recommend is to write a to-the-point explanation letter indicating that you have not been to so or so country since you submitted the Police clearance. attach it with your police certificate and reupload, call IRCC( the most painful thing to do) and request them to specify why they are requesting the same document a week apart.
follow my format to write loe if you wish.
Dear Immigration officer
I <Name>
UCI....
AOR...
Today I am writing you this explanation to indicate that the police certificate number <123xyz> I submitted is in corresponding to my stay in <country> starting from<date begin> to <date end> as per provided information in IMM 5669 Schedule A form.
Afterward, I never visited <country> thus, as per the policy I am submitting the same PCC, please review the document and if there is any discrepancy please specifically notify me to take corrective measures with sufficient time.
Thank you
Yours Sincerely,
UCI
Name.
@CherAmie