/usr/share/lintian/overrides/fetch-crl is in fetch-crl 3.0.17-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | # The cache directory is not world readable
fetch-crl: non-standard-dir-perm var/cache/fetch-crl/ *
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