sphinx_multiversion/git: Apply black autoformatting

sphinx_multiversion/git.py

@@ -48,8 +48,9 @@ def get_all_refs(gitroot):
         yield GitRef(name, commit, source, is_remote, refname, creatordate)
 
 
-def get_refs(gitroot, tag_whitelist, branch_whitelist, remote_whitelist,
-             files=()):
+def get_refs(
+    gitroot, tag_whitelist, branch_whitelist, remote_whitelist, files=()
+):
     for ref in get_all_refs(gitroot):
         if ref.source == "tags":
             if tag_whitelist is None or not re.match(tag_whitelist, ref.name):
@@ -70,8 +71,9 @@ def get_refs(gitroot, tag_whitelist, branch_whitelist, remote_whitelist,
         else:
             continue
 
-        if not all(file_exists(gitroot, ref.name, filename)
-                   for filename in files):
+        if not all(
+            file_exists(gitroot, ref.name, filename) for filename in files
+        ):
             continue
 
         yield ref