File reproducible.patch of Package python-sphinxcontrib-devhelp

diff --git a/sphinxcontrib/devhelp/__init__.py b/sphinxcontrib/devhelp/__init__.py
index bc99016..fc441d0 100644
--- a/sphinxcontrib/devhelp/__init__.py
+++ b/sphinxcontrib/devhelp/__init__.py
@@ -124,7 +124,7 @@ class DevhelpBuilder(StandaloneHTMLBuilder):
 
         # Dump the XML file
         xmlfile = path.join(outdir, outname + '.devhelp.gz')
-        with gzip.open(xmlfile, 'w') as f:
+        with gzip.GzipFile(filename=xmlfile, mode='w', mtime=0) as f:
             tree.write(f, 'utf-8')  # type: ignore