Fix being unable to use a repo that prohibits accepting PRs as a PR source. (#26785)#26790

lunny merged 1 commit intogo-gitea:release/v1.20go-gitea/gitea:release/v1.20from

GiteaBot:backport-26785-v1.20GiteaBot/gitea:backport-26785-v1.20Copy head branch name to clipboard