diff --git a/scons.changes b/scons.changes
index 64aa4c2..30ec51f 100644
--- a/scons.changes
+++ b/scons.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Dec 11 09:10:56 UTC 2024 - Bernhard Wiedemann <bwiedemann@suse.com>
+
+- Add site_init.py to pass through SOURCE_DATE_EPOCH
+
 -------------------------------------------------------------------
 Thu Oct 24 18:52:36 UTC 2024 - Andreas Stieger <andreas.stieger@gmx.de>
 
diff --git a/scons.spec b/scons.spec
index 212b6df..dca7b73 100644
--- a/scons.spec
+++ b/scons.spec
@@ -27,6 +27,8 @@ License:        MIT
 Group:          Development/Tools/Building
 URL:            https://www.scons.org/
 Source:         http://prdownloads.sourceforge.net/scons/SCons-%{version}.tar.gz
+# site_init based on https://github.com/SCons/scons/pull/4261 for reproducible builds
+Source2:        site_init.py
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
@@ -51,11 +53,14 @@ sed -i -e '/QT3_LIBPATH = os.path.join.*QT3DIR/s/lib/%{_lib}/' \
 %install
 %python_install
 %python_expand %fdupes %{buildroot}%{$python_sitelib}
+mkdir -p %{buildroot}%{_datadir}/scons/site_scons
+install -p -m 644 %{SOURCE2} %{buildroot}%{_datadir}/scons/site_scons/site_init.py
 
 %files
 %license LICENSE
 %{_bindir}/*
 %{python_sitelib}/SCons
 %{python_sitelib}/SCons-%{version}-py*.egg-info
+%{_datadir}/scons
 
 %changelog
diff --git a/site_init.py b/site_init.py
new file mode 100644
index 0000000..5281195
--- /dev/null
+++ b/site_init.py
@@ -0,0 +1,20 @@
+
+import os
+import SCons.Environment
+
+old_init = SCons.Environment.Base.__init__
+
+print("Adding logic to propagate SOURCE_DATE_EPOCH from the shell environment when building with SCons")
+
+
+def new_init(self, **kw):
+    """
+    This logic will add SOURCE_DATE_EPOCH to the execution environment used to run
+    all the build commands.
+    """
+    old_init(self, **kw)
+    if 'SOURCE_DATE_EPOCH' in os.environ:
+        self._dict['ENV']['SOURCE_DATE_EPOCH'] = os.environ['SOURCE_DATE_EPOCH']
+
+
+SCons.Environment.Base.__init__ = new_init