Merge 5e9c2268e6 into 85499b2fdc

pkg/downloader/chart_downloader.go

@@ -92,26 +92,29 @@ func (c *ChartDownloader) DownloadTo(ref, version, dest string) (string, *proven
 		return "", nil, err
 	}
 
+	name := filepath.Base(u.Path)
+	if u.Scheme == registry.OCIScheme {
+		idx := strings.LastIndexByte(name, ':')
+		name = fmt.Sprintf("%s-%s.tgz", name[:idx], name[idx+1:])
+	}
 	g, err := c.Getters.ByScheme(u.Scheme)
 	if err != nil {
 		return "", nil, err
 	}
 
+	destfile := filepath.Join(dest, name)
+
+	_, err = os.Stat(destfile)
+	if err != nil {
 		data, err := g.Get(u.String(), c.Options...)
 		if err != nil {
 			return "", nil, err
 		}
 
-	name := filepath.Base(u.Path)
-	if u.Scheme == registry.OCIScheme {
-		idx := strings.LastIndexByte(name, ':')
-		name = fmt.Sprintf("%s-%s.tgz", name[:idx], name[idx+1:])
-	}
-
-	destfile := filepath.Join(dest, name)
 		if err := fileutil.AtomicWriteFile(destfile, data, 0644); err != nil {
 			return destfile, nil, err
 		}
+	}
 
 	// If provenance is requested, verify it.
 	ver := &provenance.Verification{}