diff --git a/src/main/java/hudson/plugins/git/GitSCM.java b/src/main/java/hudson/plugins/git/GitSCM.java
index 169c95cf1a..8ab3594985 100644
--- a/src/main/java/hudson/plugins/git/GitSCM.java
+++ b/src/main/java/hudson/plugins/git/GitSCM.java
@@ -1135,6 +1135,14 @@ public void buildEnvVars(AbstractBuild<?,?> build, java.util.Map<String, String>
         if(branch != null){
             env.put(GIT_BRANCH, branch);
         }
+        BuildData bd = fixNull(getBuildData(build, false));
+        if (bd != null) {
+            String commit = bd.getLastBuiltRevision().getSha1String();
+            if (commit != null) {
+                env.put(GIT_COMMIT, commit);
+            }
+        }
+        
     }
 
     private String putChangelogDiffsIntoFile(IGitAPI git, String branchName, String revFrom,