Unreal Engine Source Code Files on Github appears to be corrupted after downloading. Any other way I can Download Source?

I tried downloading UE4 4.26.2 source code through Git and as a zip file too. ZIP file appers to be corrupted after download and github desktop client gives this error saying cloning unral engine failed. Can’t be a problem in my internet connection because I have a very stable connection. Can some one help me fixing this situation. I already tried many times to download the source both ways.