diff --git a/scripts/release/linux_x64/Dockerfile b/scripts/release/linux_x64/Dockerfile
index 788f794..f5184a4 100644
--- a/scripts/release/linux_x64/Dockerfile
+++ b/scripts/release/linux_x64/Dockerfile
@@ -1,4 +1,5 @@
 FROM p2pool_build_ubuntu
 ARG P2POOL_VERSION
+ARG P2POOL_CHECKOUT
 ADD . /p2pool/
 RUN /p2pool/scripts/release/linux_x64/p2pool_linux_x64.sh p2pool-${P2POOL_VERSION}-linux-x64 ${P2POOL_VERSION}
diff --git a/scripts/release/linux_x64/p2pool_linux_x64.sh b/scripts/release/linux_x64/p2pool_linux_x64.sh
index 3df5364..fc4f3e1 100755
--- a/scripts/release/linux_x64/p2pool_linux_x64.sh
+++ b/scripts/release/linux_x64/p2pool_linux_x64.sh
@@ -3,7 +3,8 @@ set -e
 
 cd /p2pool
 git fetch --jobs=$(nproc)
-git checkout $2
+CHECKOUT_REF=${P2POOL_CHECKOUT:-$2}
+git checkout "$CHECKOUT_REF"
 git submodule update --recursive --jobs $(nproc)
 
 export TZ=UTC0