Exhibit 23 

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CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

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We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-257044, No. 333-265879, No. 333-290635 and No. 333-296618) of our report dated September 16, 2026, appearing in this Annual Report on Form 10-K of Marathon Bancorp, Inc. relating to the consolidated financial statements for the two years ended June 30, 2026.

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