Revert "Merge pull request #187 from jenkinsci/JENKINS-14026"

This reverts commit a67bbc0, reversing
changes made to b75d1e2.

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

@@ -435,10 +435,6 @@ private String getSingleBranch(EnvVars env) {
         // Check for empty string - replace with "**" when seen.
         if (branch.equals("")) {
             branch = "**";
-        } else if (!branch.startsWith(repository)) {
-            // we can hit this case if the given branch name contains a slash.
-            // Since we have a single repository, it makes sense to prepend it anyway
-            branch = repository + "/" + branch;
         }
 
         return branch;

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

@@ -494,20 +494,6 @@ public void testBranchIsAvailableInEvironment() throws Exception {
         assertEquals("origin/master", getEnvVars(project).get(GitSCM.GIT_BRANCH));
     }
 
-    public void testBranchContainsSlash() throws Exception {
-      FreeStyleProject project = setupSimpleProject("my/branch");
-
-      final String commitFile1 = "commitFile1";
-      commit(commitFile1, johnDoe, "Commit number 1");
-      git.branch("my/branch");
-      git.checkout("my/branch");
-      final String commitFile2 = "commitFile2";
-      commit(commitFile2, johnDoe, "Commit number 2");
-      build(project, Result.SUCCESS, commitFile1, commitFile2);
-
-      assertEquals("origin/my/branch", getEnvVars(project).get(GitSCM.GIT_BRANCH));
-    }
-
     // For HUDSON-7411
     public void testNodeEnvVarsAvailable() throws Exception {
         FreeStyleProject project = setupSimpleProject("master");