Move down the retrieval of the koji request field

Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>

playbooks/roles/flag_build_commits/files/flag_commit_build.py

@@ -74,7 +74,6 @@ def main(msg):
         print('Skipping MBS builds')
         return
 
-    request = msg['request'][0]
     instance = msg['instance']
     if instance != 'primary':
         print("Ignoring secondary arch task...")
@@ -95,6 +94,7 @@ def main(msg):
     print('Talking to koji at: %s' % koji_url)
     koji_client = koji.ClientSession(koji_url)
 
+    request = msg['request'][0]
     build_id = msg['build_id']
     build = koji_client.getBuild(build_id)
     git_url = (