Always use slash (/) when fetching remote files

Signed-off-by: Fredrik Skogman <[email protected]>

metadata/updater/updater.go

@@ -225,6 +225,7 @@ func (update *Updater) DownloadTarget(targetFile *metadata.TargetFiles, filePath
 	}
 
 	targetFilePath := targetFile.Path
+	targetRemotePath := targetFilePath
 	consistentSnapshot := update.trusted.Root.Signed.ConsistentSnapshot
 	if consistentSnapshot && update.cfg.PrefixTargetsWithHash {
 		hashes := ""
@@ -237,12 +238,14 @@ func (update *Updater) DownloadTarget(targetFile *metadata.TargetFiles, filePath
 		if !ok {
 			// <hash>.<target-name>
 			targetFilePath = fmt.Sprintf("%s.%s", hashes, dirName)
+			targetRemotePath = targetFilePath
 		} else {
 			// <dir-prefix>/<hash>.<target-name>
 			targetFilePath = filepath.Join(dirName, fmt.Sprintf("%s.%s", hashes, baseName))
+			targetRemotePath = fmt.Sprintf("%s/%s.%s", dirName, hashes, baseName)
 		}
 	}
-	fullURL := fmt.Sprintf("%s%s", targetBaseURL, targetFilePath)
+	fullURL := fmt.Sprintf("%s%s", targetBaseURL, targetRemotePath)
 	data, err := update.cfg.Fetcher.DownloadFile(fullURL, targetFile.Length, time.Second*15)
 	if err != nil {
 		return "", nil, err