update mock-hermetic-repo

Author: tkopecek

mock/py/mock-hermetic-repo.py

@@ -134,6 +134,8 @@ def prepare_image(image_specification, bootstrap_data, outputdir):
     #            e.g. embedded docker reference for v1 images), so better safe than sorry
     pull_cmd = ["skopeo", "sync", "--src", "docker", "--dest", "dir",
                 "--scoped", "--preserve-digests"]
+    # skopeo (currently) can't live with tag + sha, so strip the tag
+    image_specification = image_specification.split(':')[0]
     if "architecture" in bootstrap_data:
         pull_cmd += ["--override-arch", bootstrap_data["architecture"]]
     if "pull_digest" in bootstrap_data:

mock/py/mockbuild/config.py

@@ -807,7 +807,7 @@ def process_hermetic_build_config(cmdline_opts, config_opts):
 
     # Use the offline image for bootstrapping.
     # skopeo (currently) can't live with tag + sha, so strip the tag
-    image_pullspec = data['config']['bootstrap_image'].split(':')[:-1]
+    image_pullspec = data['config']['bootstrap_image'].split(':')[0]
     image_pullspec += "@" + data['bootstrap']['pull_digest']
     bootstrap_dir = os.path.join(final_offline_repo, image_pullspec)
     config_opts["bootstrap_image"] = f"dir:{bootstrap_dir}"