How to fix Git push error: "RPC failed; curl 56 HTTP/2 stream 7 was reset send-pack: unexpected disconnect while reading sideband packet fatal: the remote end hung up unexpectedly"

Problem

Today I saw the following problem when I tried to push my changes to a Git server after doing some work for upgrading an Umbraco v7 project to v8.18.8. 

Possible reasons

After some investigations, it seems like this could be because of the following reasons;

• Git is not happy with the amount of changes that are being pushed into the server. 
• There are possible limitations on the server about the size/amount of files that you can push.
• Your internet connection is not good and stable enough.
• Your Git client's version is old.

Solution options

For me, the easiest option was connecting to another Wifi and trying again. Apparently, this option helped quite a few people, so it is worth giving it a try. Unfortunately, it didn't work for me. A bad internet connection wasn't an option for me either, as my internet is pretty fast (500 Mbps). Similarly, my Git client version was the latest version (git version 2.41.0.windows.3). 

On StackOverflow, there were a lot of recommendations to set the http.postBuffer to something higher.  

I tried this option, too. Once more without any luck. After digging into more details about setting the postBuffer, I learnt that Microsoft recommends not doing this blindly without reviewing this article first that recommends upgrading the Git client to the latest version, checking some hotfixes and things like whether you are using a proxy or load balancer. In this same article, it also states the following;

How I fixed my issue

After trying all these options, I ended up pushing one small change at a time and that worked like a charm. This way I didn't need to make any changes with my current setup.