Git URL is not re-validated on edit build-config form reload

Description of problem:

On reloading edit build-config form the Git URL is changed to the original URL but is not re-validated.

Prerequisites (if any, like setup, operators/versions):

Steps to Reproduce

1. Open Edit BuildConfig form.
2. Change Git URL to something that shows a warning/error on validation.
3. Click on reload button.

Actual results:

Notice the URL is not revalidated and the warning/error is still shown.

See attachment.

Expected results:

URL should be revalidated.

Reproducibility (Always/Intermittent/Only Once): Always

Build Details:

Additional info: