Merge pull request #3 from Automattic/add/BUILDKITE_PULL_REQUEST_REPO-to-jobs

Add BUILDKITE_PULL_REQUEST_REPO to mac jobs

Author: jkmassel

Sources/hostmgr/commands/generate/GenerateBuildkiteJobScript.swift

@@ -40,6 +40,7 @@ struct GenerateBuildkiteJobScript: ParsableCommand {
             "BUILDKITE_TAG",
             "BUILDKITE_REFSPEC",
             "BUILDKITE_PULL_REQUEST",
+            "BUILDKITE_PULL_REQUEST_REPO",
             "BUILDKITE_AGENT_META_DATA_QUEUE",
             "BUILDKITE_ORGANIZATION_SLUG",
             "BUILDKITE_PIPELINE_SLUG",