GatherPrereqs.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
    <RestorePackagesPath>$(MSBuildThisFileDirectory)/restored/</RestorePackagesPath>
    <PackageVersionToDownload>6.0.12</PackageVersionToDownload>
  </PropertyGroup>

  <ItemGroup>
    <PackageDownload Include="Microsoft.NET.Runtime.Emscripten.2.0.23.Node.linux-x64" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="Microsoft.NET.Runtime.Emscripten.2.0.23.Sdk.linux-x64" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="Microsoft.NET.Runtime.MonoAOTCompiler.Task" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="Microsoft.NET.Runtime.MonoTargets.Sdk" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="Microsoft.NET.Runtime.WebAssembly.Sdk" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="Microsoft.NETCore.App.Runtime.AOT.linux-x64.Cross.browser-wasm" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="microsoft.net.runtime.monoaotcompiler.task" Version="[$(PackageVersionToDownload)]" />
    <PackageDownload Include="microsoft.netcore.app.runtime.mono.browser-wasm" Version="[$(PackageVersionToDownload)]" />
  </ItemGroup>

</Project>

NuGet.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <packageSources>
    <clear />
    <add key="servicing" value="your private feed here" />
  </packageSources>
  <packageSourceCredentials>
      <servicing>
        <add key="Username" value="your username here" />
        <add key="ClearTextPassword" value="your pat here" />
      </servicing>
  </packageSourceCredentials>
</configuration>