diff --git a/ci/lint/04_install.sh b/ci/lint/04_install.sh
index 7a01482025..ff9206fb6f 100755
--- a/ci/lint/04_install.sh
+++ b/ci/lint/04_install.sh
@@ -21,7 +21,7 @@ ${CI_RETRY_EXE} apt-get install -y automake pkg-config libtool curl xz-utils git
 PYTHON_PATH="/python_build"
 if [ ! -d "${PYTHON_PATH}/bin" ]; then
   (
-    ${CI_RETRY_EXE} git clone https://github.com/pyenv/pyenv.git
+    ${CI_RETRY_EXE} git clone --depth=1 https://github.com/pyenv/pyenv.git
     cd pyenv/plugins/python-build || exit 1
     ./install.sh
   )
diff --git a/ci/lint_imagefile b/ci/lint_imagefile
index 9adc256a62..0e7ede5204 100644
--- a/ci/lint_imagefile
+++ b/ci/lint_imagefile
@@ -4,7 +4,7 @@
 
 # See test/lint/README.md for usage.
 
-FROM debian:bookworm
+FROM docker.io/debian:bookworm
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV LC_ALL=C.UTF-8