diff --git a/modules/git/repo_compare.go b/modules/git/repo_compare.go
index ec8bacb5ec..5d7fbe6df6 100644
--- a/modules/git/repo_compare.go
+++ b/modules/git/repo_compare.go
@@ -233,17 +233,6 @@ func parseDiffStat(stdout string) (numFiles, totalAdditions, totalDeletions int,
 	return numFiles, totalAdditions, totalDeletions, err
 }
 
-// GetDiffOrPatch generates either diff or formatted patch data between given revisions
-func (repo *Repository) GetDiffOrPatch(compareString string, w io.Writer, patch, binary bool) error {
-	if patch {
-		return repo.GetPatch(compareString, w)
-	}
-	if binary {
-		return repo.GetDiffBinary(compareString, w)
-	}
-	return repo.GetDiff(compareString, w)
-}
-
 func parseCompareArgs(compareArgs string) (args []string) {
 	parts := strings.Split(compareArgs, "...")
 	if len(parts) == 2 {
diff --git a/services/pull/patch.go b/services/pull/patch.go
index 192a67739e..c5befe39d6 100644
--- a/services/pull/patch.go
+++ b/services/pull/patch.go
@@ -29,6 +29,17 @@ import (
 	"github.com/gobwas/glob"
 )
 
+// getDiffOrPatch generates either diff or formatted patch data between given revisions
+func getDiffOrPatch(repo *git.Repository, compareString string, w io.Writer, patch, binary bool) error {
+	if patch {
+		return repo.GetPatch(compareString, w)
+	}
+	if binary {
+		return repo.GetDiffBinary(compareString, w)
+	}
+	return repo.GetDiff(compareString, w)
+}
+
 // DownloadDiffOrPatch will write the patch for the pr to the writer
 func DownloadDiffOrPatch(ctx context.Context, pr *issues_model.PullRequest, w io.Writer, patch, binary bool) error {
 	if err := pr.LoadBaseRepo(ctx); err != nil {
@@ -42,7 +53,7 @@ func DownloadDiffOrPatch(ctx context.Context, pr *issues_model.PullRequest, w io
 	}
 	defer closer.Close()
 
-	if err := gitRepo.GetDiffOrPatch(pr.MergeBase+".."+pr.GetGitRefName(), w, patch, binary); err != nil {
+	if err := getDiffOrPatch(gitRepo, pr.MergeBase+"..."+pr.GetGitRefName(), w, patch, binary); err != nil {
 		log.Error("unable to get patch file from %s to %s in %s Error: %v", pr.MergeBase, pr.HeadBranch, pr.BaseRepo.FullName(), err)
 		return fmt.Errorf("unable to get patch file from %s to %s in %s Error: %w", pr.MergeBase, pr.HeadBranch, pr.BaseRepo.FullName(), err)
 	}