Use test branch.

trivialfis · trivialfis · commit 3e7bd6dd4e4b · 2026-04-09T21:42:01.000+08:00
diff --git a/ops/pipeline/get-image-tag.sh b/ops/pipeline/get-image-tag.sh
@@ -3,4 +3,4 @@
 ## Update the following line to test changes to CI images
 ## See https://xgboost.readthedocs.io/en/latest/contrib/ci.html#making-changes-to-ci-containers
 
-IMAGE_TAG=main
+IMAGE_TAG=PR-78
