diff --git a/fetch.sh b/fetch.sh
index 765640f9f..e8414e858 100755
--- a/fetch.sh
+++ b/fetch.sh
@@ -4,6 +4,10 @@ set -e
 
 . ./pika-build-config.sh
 
+VERSION="$PIKA_PACKAGE_VERSION"
+
+echo "$PIKA_BUILD_ARCH" > pika-build-arch
+
 if [[ $PIKA_BUILD_ARCH == "amd64-v3" ]]
 then
 	export PIKA_BIN_ARCH="amd64"