GHSA-XMJ7-XJ85-HFC3 Gitea: SSRF in restore-repo via unsanitized pull_request.yml Head.CloneURL

Summary Gitea's restore-repo CLI command restores a repository from a dump directory/archive. When parsing pullrequest.yml from that dump, the Head.CloneURL field is used to add a git remote and fetch from it with no validation, because the safety check that's supposed to guard it...