--- a/mercurial/streamclone.py	Mon Jan 06 14:15:40 2025 -0500
+++ b/mercurial/streamclone.py	Sun Jan 05 21:03:17 2025 -0500
@@ -678,7 +678,7 @@
             self._flush_some_on_disk()
         try:
             return self._keep_one(src)
-        except IOError as err:
+        except OSError as err:
             if err.errno not in (errno.ENOENT, errno.EPERM):
                 raise
             return None