Use ADD command for pulling git repos.

This is to fix buildkit caching.

docker/organic_test/Dockerfile

@@ -17,9 +17,7 @@ RUN apk add --no-cache build-base musl-dev git autoconf make texinfo gnutls-dev
 
 
 FROM build AS build-emacs
-ARG EMACS_VERSION
-ARG EMACS_REPO
-RUN git clone --depth 1 --branch $EMACS_VERSION $EMACS_REPO /root/emacs
+ADD https://code.fizz.buzz/mirror/emacs.git#emacs-29.1 /root/emacs
 WORKDIR /root/emacs
 RUN mkdir /root/dist
 RUN ./autogen.sh