projects[it]

src/org/qg/docker/StageBucket.groovy

@@ -56,9 +56,9 @@ def checkout(branchName, gitRepo) {
         branches = branchName.split("--")
 
         t1.size().times {
-            sh "mkdir -p ${projects[it]};cd ${projects[it]}"
-            git "git clone git@git.quantgroup.cn:${groups[it]}/${projects[it]}.git"
-            sh "cd .."
+            dir (projects[it]) {
+                git branch: branches[it], credentialsId: 'e1ccb1ac-1282-4fb4-b766-530ca1a2a2db', url: "git@git.quantgroup.cn:${groups[it]}/${projects[it]}.git"
+            }
         }
     }
     else{