Try building against branch with fixes

Author: marcprux

.github/workflows/build_android_sdk.yml

@@ -31,7 +31,7 @@ jobs:
           #repository: swiftlang/swift-docker
           repository: swift-android-sdk/swift-docker
           # fix for true_false
-          branch: twerk
+          ref: twerk
       - name: Free Disk Space
         run: |
           df -h