Rewrite most of the imaging scripts
diff --git a/gitbundle/gitbundle.sh b/gitbundle/gitbundle.sh
new file mode 100644
index 0000000..0b70c21
--- /dev/null
+++ b/gitbundle/gitbundle.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -euxo pipefail
+
+BUILDKITE_API_TOKEN=$(gsutil cat "gs://bazel-encrypted-secrets/buildkite-api-token.enc" | \
+ gcloud kms decrypt --location "global" --keyring "buildkite" --key "buildkite-api-token" --plaintext-file "-" --ciphertext-file "-")
+
+rm -rf bazelbuild
+gsutil cat "gs://bazel-git-mirror/bazelbuild.tar" | tar x
+cd bazelbuild
+
+git config --local gc.auto 0
+
+for remote in $(git remote); do
+ git remote remove "${remote}"
+done
+
+for repo in $(curl -sS -H "Authorization: Bearer ${BUILDKITE_API_TOKEN}" "https://api.buildkite.com/v2/organizations/bazel/pipelines?per_page=100" \
+ | jq '.[] | .repository' | sort -u | sed -e 's/^"//' -e 's/"$//'); do
+remote_name="$(echo $repo | md5sum | cut -d' ' -f1)"
+git remote add --no-tags "${remote_name}" "${repo}"
+done
+
+git fetch --all
+git gc --aggresive
+
+cd ..
+tar c bazelbuild | gsutil -m cp -a public-read - "gs://bazel-git-mirror/bazelbuild.tar"
