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copied!<p>I gave a look at the JGit sources and there does not seem to be present a method to check for the validity of the remote repo. </p> <p>This is the <code>call</code> method of <code>CloneCommand</code>:</p> <pre><code>public Git call() throws JGitInternalException { try { URIish u = new URIish(uri); Repository repository = init(u); FetchResult result = fetch(repository, u); if (!noCheckout) checkout(repository, result); return new Git(repository); } catch (IOException ioe) { throw new JGitInternalException(ioe.getMessage(), ioe); } catch (InvalidRemoteException e) { throw new JGitInternalException(e.getMessage(), e); } catch (URISyntaxException e) { throw new JGitInternalException(e.getMessage(), e); } } </code></pre> <p>In order to get if the remote URL is invalid, when catching a <code>JGitInternalException</code> <code>e</code> you may get the actual cause with <code>e.getCause()</code> to look for <code>InvalidRemoteException</code> or even <code>URISyntaxException</code>, but as you pointed out you end up cloning if it is actually valid; the library does not allow you to interrupt the operation.</p> <p>Delving more deeply into the JGit code, the <code>TransportLocal</code> class has the <code>open(URIsh,Repository,String)</code> method you could have used to check if an <code>InvalidRemoteException</code> is thrown, but its constructor is not public. A do-it-yourself solution is required, alas. You could maybe start from the contents of the <code>TransportLocal.open</code> method I mentioned.</p>

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