Also recommend CloneOption.noTags

Author: jglick

src/main/resources/org/jenkinsci/plugins/workflow/libs/SCMBasedRetriever/help-clone.html

@@ -1,6 +1,8 @@
 <div>
     If checked, every build performs a fresh clone of the SCM rather than locking and updating a common copy.
     No changelog will be computed.
-    For Git, you are advised to select <b>Advanced clone behaviors » Shallow clone</b> to make the clone much faster.
+    For Git, you are advised to add <b>Advanced clone behaviors</b>
+    and then check <b>Shallow clone</b> and uncheck <b>Fetch tags</b>
+    to make the clone much faster.
     You may still enable <b>Cache fetched versions on controller for quick retrieval</b> if you prefer.
 </div>

src/test/java/org/jenkinsci/plugins/workflow/libs/SCMSourceRetrieverTest.java

@@ -379,7 +379,7 @@ public static class BasicSCMSource extends SCMSource {
         sampleRepo.git("add", ".");
         sampleRepo.git("commit", "--message=init");
         GitSCMSource src = new GitSCMSource(sampleRepo.toString());
-        src.setTraits(List.<SCMSourceTrait>of(new CloneOptionTrait(new CloneOption(true, null, null))));
+        src.setTraits(List.<SCMSourceTrait>of(new CloneOptionTrait(new CloneOption(true, true, null, null))));
         SCMSourceRetriever scm = new SCMSourceRetriever(src);
         LibraryConfiguration lc = new LibraryConfiguration("echoing", scm);
         lc.setIncludeInChangesets(false);
@@ -391,6 +391,7 @@ public static class BasicSCMSource extends SCMSource {
         assertFalse(r.jenkins.getWorkspaceFor(p).withSuffix("@libs").isDirectory());
         r.assertLogContains("something special", b);
         r.assertLogContains("Using shallow clone with depth 1", b);
+        r.assertLogContains("Avoid fetching tags", b);
         // Fails to reproduce presence of *.jar.tmp@tmp; probably specific to use of GIT_ASKPASS:
         assertThat(new File(b.getRootDir(), "libs").list(), arrayContaining(matchesPattern("[0-9a-f]{64}[.]jar")));
     }