<Query Kind="Program">
  <NuGetReference>Octokit</NuGetReference>
  <Namespace>Octokit</Namespace>
</Query>

void Main()
{
	const string packageName = "MyPackage";

	var searchResult = new RepositoryFinder()
		.FindReposThatUse(packageName);

	var repos = searchResult.Items
		.Where(r => r.Repository.Name != packageName)
		.GroupBy(it => it.Repository.Id)
		.Select(gr => gr.FirstOrDefault()?.Repository)
		.ToList();

	$"Projects dependant of {packageName}:".Dump();
	repos.Select(r => r.Name).Dump();
}

public class RepositoryFinder
{
	private const string GitHubUrl = @"https://github.xxxxxxxx.com/";
	private const string OrganizationName = @"xxxxxxxx";
  
	private readonly IGitHubClient _client;

	public RepositoryFinder()
	{
		Uri url = new Uri(GitHubUrl);
		_client = new GitHubClient(new ProductHeaderValue("DependenciesSearchTool"), url);
	}

	public SearchCodeResult FindReposThatUse(string packageName)
	{
		SearchCodeRequest request = new SearchCodeRequest($"org:{OrganizationName} \"{packageName}\"")
		{
			Extensions = new[] { "csproj", "config" }
		};

		return _client.Search.SearchCode(request).Result;
	}
}