Add tag var

main.go

@@ -18,9 +18,13 @@ func main() {
 	if err != nil {
 		gha.Fatalf("failed to get context: %v", err)
 	}
+	tag := gha.GetInput("tag")
+	if tag == "" {
+		tag = ctx.Ref
+	}
 
-	if !strings.HasPrefix(ctx.Ref, "refs/tags/") {
-		gha.Fatalf("ref %s is not a tag", ctx.Ref)
+	if !strings.HasPrefix(tag, "refs/tags/") {
+		gha.Fatalf("ref %s is not a tag", tag)
 	}
 
 	files := gha.GetInput("files")
@@ -54,7 +58,7 @@ func main() {
 	repo := strings.Split(ctx.Repository, "/")[1]
 
 	rel, err := createOrGetRelease(ctx, c, owner, repo, gitea.CreateReleaseOption{
-		TagName:      ctx.RefName,
+		TagName:      tag,
 		IsDraft:      draft,
 		IsPrerelease: preRelease,
 		Title:        title,