fix: Invalid UTF-8 commit messages in JSON API responses (#37542)

services/repository/files/content.go

@@ -179,7 +179,7 @@ func getFileContentsByEntryInternal(ctx context.Context, repo *repo_model.Reposi
 			}
 		}
 		if opts.IncludeCommitMessage {
-			contentsResponse.LastCommitMessage = new(lastCommit.Message())
+			contentsResponse.LastCommitMessage = new(lastCommit.MessageUTF8())
 		}
 	}
 

services/repository/files/file.go

@@ -110,7 +110,7 @@ func GetFileCommitResponse(repo *repo_model.Repository, commit *git.Commit) (*ap
 			},
 			Date: commit.Committer.When.UTC().Format(time.RFC3339),
 		},
-		Message: commit.Message(),
+		Message: commit.MessageUTF8(),
 		Tree: &api.CommitMeta{
 			URL: commitTreeURL.String(),
 			SHA: commit.Tree.ID.String(),