Help signing OpenCore for secure boot

I bought a laptop today with lost bios password so i can't disable secure boot to install mac. I found out OpenCore can be booted with secure boot enabled as well but i am having trouble with it. I tried this one:

https://github.com/perez987/OpenCore-and-UEFI-Secure-Boot

But I still can't boot it. Are there any presigned ones?

submitted by /u/elfametesar
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