Use gitrepo.GetTreePathLatestCommit to get file lastest commit instead from latest commit cache (#32987)#33046

lunny merged 2 commits intogo-gitea:release/v1.23go-gitea/gitea:release/v1.23from

GiteaBot:backport-32987-v1.23GiteaBot/gitea:backport-32987-v1.23Copy head branch name to clipboard