Trying to patch the engine or workaround an OpenSSL bug in an older verson (4.19)

So my game was built in 4.19 and it’s close to release, so upgrading the engine version at this point would make me concerned about the stability of the game. However, I’m getting a well-documented crash that is known to happen on certain intel cards due to OpenSSL.

https://www.intel.com/content/www/us/en/developer/articles/troubleshooting/openssl-sha-crash-bug-requires-application-update.html

The people experiencing the crash have confirmed that adding the variable to their steam launch options does fix the crash, so all this page from intel is saying I need to do is patch the game with the fix that was done for 4.22:

https://github.com/EpicGames/UnrealEngine/commit/1cd6d88b330961247e6544d2f06c95c714d94cfd

I’m not sure how exactly to do this, though. I’m not experienced at all with working on the engine. I can successfully compile it from source code, but that’s about the extent of my knowledge.

If anyone could walk me through the basic steps on how to apply this patch, or if you can offer a different solution for how to insert that OPENSSL_ia32cap setting right into my game, or even something else I haven’t thought of yet, I would be grateful. I should say I’ve never used git before. I just downloaded and extracted the zip to get the source files.