"invalid version 0 on git_proxy_options" thrown when natives are built from source

Hi, I'm currently trying to make a custom build that uses libssh2 instead of exec for SSH, since I don't want OpenSSH windows to spawn as my program makes requests. I changed this flag, then followed through the rest of the compilation steps both for native binaries and lg2s.

I then tried pulling, not on a proxy, using this code:

var fOptions = new FetchOptions ();
fOptions.Prune = UpdaterMod.settings.pruneOld;

var mOptions = new MergeOptions ();
mOptions.CommitOnSuccess = true;
mOptions.FileConflictStrategy = UpdaterMod.settings.onFileConflict;

var sig = new Signature (new Identity (modName, email), DateTimeOffset.Now);

try {
    string logHolder = "";
    Commands.Fetch (repo, remote.Name, refSpecs, fOptions, logHolder);

    if (logHolder.Length > 0)
        LogMsg (logHolder, LogMode.Warn);
}
catch (Exception e) {
    LogMsg ($"Could not fetch data from remote repo: {e.Message}", LogMode.Error);
    return;
}

Expected behavior

The program should attempt to pull without trying to use a proxy.

Actual behavior

The caught exception contains the message in the title.

System information

Windows 10 10.0.19045

AMD Ryzen 5 3600

Other useful information

This issue persists when the flag is switched back to exec

Start at the Commands.Fetch call with FetchOptions on the reported Windows build, then trace how the native build handles proxy options and version validation. Reproduce the fetch with the custom and exec configurations; done means a non-proxy fetch no longer throws the reported invalid-version exception.