Can't Download Large Repo

I’m having a lot of trouble downloading a repo that’s between 20-50GB

I first tried cloning it, which failed after 12 hours (time out)

I then tried again cloning it from multiple git clients in case the client was the problem, again time out - this time when I looked on GitLab I wasn’t able to view the repo because their was a deployment in progress? not sure if that was the cause of the interruption that time.

Yesterday I left the repo downloading as a ZIP, however I’ve woken this morning to find that it’s invalid, and I can’t extract it.

I’m getting capped to a 500-600 KB/s download speed for both cloning and the zip - is there a way I can increase that?