index.js / getFetchUrl(): Include deployment path

getFetchUrl() returns an URL of the form
<scheme>://<host>[:port]/<owner>/<repo-name>
This is incompatible with deployments under
<scheme>://<host>[:port]/<base-path>/<owner>/<repo-name>
and it breaks authentication for me. Fix that.
Signed-off-by: Jan Lindemann <jan@janware.com>

dist/index.js

@@ -2730,8 +2730,7 @@ function getFetchUrl(settings) {
         const user = settings.sshUser.length > 0 ? settings.sshUser : 'git';
         return `${user}@${serviceUrl.hostname}:${encodedOwner}/${encodedName}.git`;
     }
-    // "origin" is SCHEME://HOSTNAME[:PORT]
-    return `${serviceUrl.origin}/${encodedOwner}/${encodedName}`;
+    return `${serviceUrl}/${encodedOwner}/${encodedName}`;
 }
 function getServerUrl(url) {
     let resolvedUrl = process.env['GITHUB_SERVER_URL'] || 'https://github.com';