diff -r b0a4de6c14f8 -r ca7bde5dbafb mercurial/streamclone.py
--- a/mercurial/streamclone.py	Thu Jul 18 12:03:29 2024 +0200
+++ b/mercurial/streamclone.py	Thu Jul 18 12:36:12 2024 +0200
@@ -547,6 +547,7 @@
 _srcstore = b's'  # store (svfs)
 _srccache = b'c'  # cache (cache)
 
+
 # This is it's own function so extensions can override it.
 def _walkstreamfullstorefiles(repo):
     """list snapshot file from the store"""
@@ -809,7 +810,6 @@
     """
 
     with repo.lock():
-
         repo.ui.debug(b'scanning\n')
 
         entries = _entries_walk(
@@ -857,7 +857,6 @@
     # considering the files to preserve, disabling the gc while we do so helps
     # performance a lot.
     with repo.lock(), util.nogc():
-
         repo.ui.debug(b'scanning\n')
 
         entries = _entries_walk(
@@ -990,7 +989,6 @@
         with repo.transaction(b'clone'):
             ctxs = (vfs.backgroundclosing(repo.ui) for vfs in vfsmap.values())
             with nested(*ctxs):
-
                 for i in range(entrycount):
                     filecount = util.uvarintdecodestream(fp)
                     if filecount == 0:
@@ -1123,7 +1121,6 @@
 
     with dest_repo.lock():
         with src_repo.lock():
-
             # bookmark is not integrated to the streaming as it might use the
             # `repo.vfs` and they are too many sentitive data accessible
             # through `repo.vfs` to expose it to streaming clone.