Fix quality and python private jobs

scripts/jenkins-common.sh

@@ -18,7 +18,8 @@ mongo --quiet --eval 'db.getMongo().getDBNames().forEach(function(i){db.getSibli
 # branch to a target branch; depending on how the GitHub plugin refspec
 # is configured, this may not already be fetched.
 if [ ! -z ${TARGET_BRANCH+x} ]; then
-    git fetch origin $TARGET_BRANCH:refs/remotes/origin/$TARGET_BRANCH
+    TARGET_BRANCH_WITHOUT_ORIGIN=$(echo "${TARGET_BRANCH}" | sed 's:^origin/::')
+    git fetch origin $TARGET_BRANCH_WITHOUT_ORIGIN:refs/remotes/origin/$TARGET_BRANCH_WITHOUT_ORIGIN
 fi
 
 # Reset the jenkins worker's virtualenv back to the

scripts/xss-commit-linter.sh

@@ -60,8 +60,16 @@ done
 current_branch_hash=`git rev-parse HEAD`
 
 if [ -z "${MAIN_COMMIT+x}" ]; then
-    # if commit is not set, get hash of current branch
-    MAIN_COMMIT="origin/master"
+    if [ -z ${TARGET_BRANCH+x} ]; then
+        # if commit is not set and no target branch, get hash of current branch
+        MAIN_COMMIT="origin/master"
+    else
+        if [[ $TARGET_BRANCH == origin/* ]]; then
+            MAIN_COMMIT=$TARGET_BRANCH
+        else
+            MAIN_COMMIT=origin/$TARGET_BRANCH
+        fi
+    fi
 fi
 
 merge_base_command="git merge-base $current_branch_hash $MAIN_COMMIT"

tox.ini

@@ -45,6 +45,7 @@ passenv =
     SELENIUM_PORT
     SHARD
     SKIP_NPM_INSTALL
+    TARGET_BRANCH
     TEST_SUITE
     XDIST_CONTAINER_SECURITY_GROUP
     XDIST_CONTAINER_SUBNET