[JENKINS-73797] Revert "Decorate GitClient after adding credentials (#1649)"

https://issues.jenkins.io/browse/JENKINS-73797 reports that
Bitbucket branch source plugin multibranch Pipelines are broken by this
change if they use ssh access to the repository.  Rather than disrupt
users by breaking their Pipelines, revert the change and release it so
that we have time to evaluate alternatives and to develop better tests.

This reverts commit 843d48b.

Author: MarkEWaite

src/main/java/hudson/plugins/git/GitSCM.java

@@ -912,6 +912,9 @@ private GitClient createClient(TaskListener listener, EnvVars environment, @NonN
         Git git = Git.with(listener, environment).in(ws).using(gitExe);
 
         GitClient c = git.getClient();
+        for (GitSCMExtension ext : extensions) {
+            c = ext.decorate(this,c);
+        }
 
         for (UserRemoteConfig uc : getUserRemoteConfigs()) {
             String ucCredentialsId = uc.getCredentialsId();
@@ -935,10 +938,6 @@ private GitClient createClient(TaskListener listener, EnvVars environment, @NonN
         }
         // TODO add default credentials
 
-        for (GitSCMExtension ext : extensions) {
-            c = ext.decorate(this,c);
-        }
-
         return c;
     }
 

src/test/java/hudson/plugins/git/GitSCMTest.java

@@ -5,7 +5,6 @@
 import com.cloudbees.plugins.credentials.CredentialsStore;
 import com.cloudbees.plugins.credentials.SystemCredentialsProvider;
 import com.cloudbees.plugins.credentials.common.StandardCredentials;
-import com.cloudbees.plugins.credentials.common.StandardUsernameCredentials;
 import com.cloudbees.plugins.credentials.domains.Domain;
 import com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl;
 import org.htmlunit.html.HtmlPage;
@@ -2916,30 +2915,6 @@ public void testCommitMessageIsPrintedToLogs() throws Exception {
         r.waitForMessage("Commit message: \"test commit\"", run);
     }
 
-    @Issue("JENKINS-73677")
-    @Test
-    public void testExtensionsDecorateClientAfterSettingCredentials() throws Exception {
-        assumeTrue("Test class max time " + MAX_SECONDS_FOR_THESE_TESTS + " exceeded", isTimeAvailable());
-        FreeStyleProject project = setupSimpleProject("master");
-        StandardCredentials extensionCredentials = createCredential(CredentialsScope.GLOBAL, "github");
-        store.addCredentials(Domain.global(), extensionCredentials);
-        // setup global config
-        List<UserRemoteConfig> remoteConfigs = GitSCM.createRepoList("https://github.com/jenkinsci/git-plugin", null);
-        project.setScm(new GitSCM(
-            remoteConfigs,
-            Collections.singletonList(new BranchSpec("master")),
-            false,
-            null,
-            null,
-            null,
-            List.of(new TestSetCredentialsGitSCMExtension((StandardUsernameCredentials) extensionCredentials))));
-        sampleRepo.init();
-        sampleRepo.write("file", "v1");
-        sampleRepo.git("commit", "--all", "--message=test commit");
-        Run<?, ?> run = r.buildAndAssertSuccess(project);
-        r.waitForMessage("using GIT_ASKPASS to set credentials " + extensionCredentials.getDescription(), run);
-    }
-
     private void setupJGit(GitSCM git) {
         git.gitTool="jgit";
         r.jenkins.getDescriptorByType(GitTool.DescriptorImpl.class).setInstallations(new JGitTool(Collections.emptyList()));
@@ -2973,19 +2948,4 @@ private boolean isWindows() {
     private StandardCredentials createCredential(CredentialsScope scope, String id) {
         return new UsernamePasswordCredentialsImpl(scope, id, "desc: " + id, "username", "password");
     }
-
-    public static class TestSetCredentialsGitSCMExtension extends GitSCMExtension {
-
-        private final StandardUsernameCredentials credentials;
-
-        public TestSetCredentialsGitSCMExtension(StandardUsernameCredentials credentials) {
-            this.credentials = credentials;
-        }
-
-        @Override
-        public GitClient decorate(GitSCM scm, GitClient git) throws GitException {
-            git.setCredentials(credentials);
-            return git;
-        }
-    }
 }