diff --git a/.github/workflows/envoy.yml b/.github/workflows/envoy.yml
index e1db550..a770847 100644
--- a/.github/workflows/envoy.yml
+++ b/.github/workflows/envoy.yml
@@ -20,6 +20,18 @@ jobs:
     if: github.repository_owner == 'envoyproxy'
     steps:
     - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332  # v4.1.7
+
+    - id: versions
+      run: |
+        bazel build --config=ci //:debs_downloads
+
+
+        exit 1
+
+
+    - uses: actions/cache/restore
+      with:
+        key: ${{ steps.versions.outputs.hash }}
     - run: |
         bazel build --config=ci //:debs
         tar tf bazel-bin/debs.tar.gz
diff --git a/fetcher.py b/fetcher.py
index 9333b32..8bbbf22 100644
--- a/fetcher.py
+++ b/fetcher.py
@@ -13,6 +13,8 @@
 from aio.run import runner
 from envoy.base.utils import extract, pack
 
+DEFAULT_MAX_CONCURRENCY = 3
+
 
 class FetchingRunner(runner.Runner):
 
@@ -31,6 +33,7 @@ def session(self):
     def add_arguments(self, parser) -> None:
         super().add_arguments(parser)
         parser.add_argument('--downloads', help="JSON k/v of downloads/checksums(optional)")
+        parser.add_argument('--concurrency', default=DEFAULT_MAX_CONCURRENCY, help="Maximum concurrent downloads")
         parser.add_argument('--extract-downloads', action="store_true", default=False, help="Extract downloaded files")
         parser.add_argument('--output', help="Output format")
         parser.add_argument('--output-path', help="Output path")
@@ -42,6 +45,13 @@ def download_path(self, url):
             self.downloads[url]["path"],
             self.filename(url))
 
+    async def fetch(self, url):
+        download_path = None
+        if "path" in self.downloads[url]:
+            download_path = self.download_path(url)
+            download_path.parent.mkdir(parents=True, exist_ok=True)
+        return await self.fetch_bytes(url, path=download_path)
+
     async def fetch_bytes(self, url, path=None):
         async with self.session.get(url) as response:
             if not path:
@@ -60,13 +70,6 @@ async def fetch_bytes(self, url, path=None):
 
             return url, None
 
-    async def fetch_artefacts(self, url):
-        download_path = None
-        if "path" in self.downloads[url]:
-            download_path = self.download_path(url)
-            download_path.parent.mkdir(parents=True, exist_ok=True)
-        return await self.fetch_bytes(url, path=download_path)
-
     def filename(self, url):
         parsed_url = urlsplit(url)
         path_parts = parsed_url.path.split("/")
@@ -80,7 +83,7 @@ def hashed(self, content):
     @runner.cleansup
     async def run(self):
         result = {}
-        async for (url, response) in concurrent((self.fetch_artefacts(url) for url in self.downloads), limit=3):
+        async for (url, response) in concurrent((self.fetch(url) for url in self.downloads), limit=self.args.concurrency):
             if self.args.output == "json":
                 result[url] = response.decode()