@Nullable
  private Url correctSourceUrl(@NotNull Url targetUrl, @NotNull Url realTargetUrl) {
    if (isAncestor(targetUrl, realTargetUrl)) {
      try {
        return myCurrentBranch.appendPath(getRelativeUrl(targetUrl, realTargetUrl), false);
      }
      catch (SvnBindException ignored) {
      }
    }

    return null;
  }
@Nullable
  private Url correctSourceUrl(@NotNull Url targetUrl, @NotNull Url realTargetUrl)