Clone the git repo instead of using ADD.

Using ADD breaks the caching.

.webhook_bridge/pipeline-foreign-document-test.yaml

@@ -103,7 +103,7 @@ spec:
             - name: url
               value: https://code.fizz.buzz/talexander/personal_tekton_catalog.git
             - name: revision
-              value: f909b6670474346e37a57a2d23131860b6a1a635
+              value: c3654438e879e326993558922ac671225ba81499
             - name: pathInRepo
               value: task/buildah-rootless-daemonless/0.1/buildah-rootless-daemonless.yaml
         params:

docker/organic_test/Dockerfile

@@ -19,7 +19,17 @@ RUN apk add --no-cache build-base musl-dev git autoconf make texinfo gnutls-dev
 FROM build AS build-emacs
 ARG EMACS_REPO
 ARG EMACS_VERSION
-ADD "$EMACS_REPO#$EMACS_VERSION" /root/emacs
+
+RUN <<EOF
+set -euo pipefail
+IFS=$'\n\t'
+mkdir -p /root/emacs
+git -C /root/emacs init --initial-branch=main
+git -C /root/emacs remote add origin $EMACS_REPO
+git -C /root/emacs fetch origin $EMACS_VERSION
+git -C /root/emacs checkout FETCH_HEAD
+EOF
+#ADD "$EMACS_REPO#$EMACS_VERSION" /root/emacs
 WORKDIR /root/emacs
 RUN <<EOF
 mkdir /root/dist