How can I extract a certificate from the OpenSSL default CA bundle by subject or hash?

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Is there any way to look up a certificate from OpenSSL's default store if I know the subject or the hash of the one I want, or perhaps if I have a certificate that was signed by it?

I can verify the certificate (and thus determine that the issuer is in the standard set) with

openssl verify myCert.pem

and I can get the subject or hash of the one I want with

openssl x509 -issuer -noout -in myCert.pem
openssl x509 -issuer_hash -noout -in myCert.pem

but I don't know how to then get the issuer certificate itself.

I need this so I can do an OCSP lookup to see if the certificate has been revoked.

Thanks!

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