Fetch source projects of requests

We do not care for current devel project, but for the projects we saw
requests from

lib/git_exporter.py

@@ -1,13 +1,16 @@
 import logging
 import os
-from lib.binary import is_binary_or_large
+
 import yaml
+
+from lib.binary import is_binary_or_large
 from lib.db import DB
 from lib.git import Git
 from lib.obs import OBS
 from lib.proxy_sha256 import ProxySHA256, md5
 from lib.tree_builder import TreeBuilder
 
+
 class GitExporter:
     def __init__(self, api_url, project, package, repodir):
         self.obs = OBS()
@@ -24,7 +27,6 @@ class GitExporter:
         self.state_file = os.path.join(self.git.path, ".git", "_flat_state.yaml")
         self.gc_interval = 200
 
-
     def download(self, revision):
         obs_files = self.obs.files(revision.project, revision.package, revision.srcmd5)
         git_files = {