File reproducible-tgz-mtime.patch of Package tycho

--- tycho-1.6.0/tycho-p2/tycho-p2-director-plugin/src/main/java/org/eclipse/tycho/plugins/tar/TarGzArchiver.java	2024-09-19 14:16:09.460537990 +0200
+++ tycho-1.6.0/tycho-p2/tycho-p2-director-plugin/src/main/java/org/eclipse/tycho/plugins/tar/TarGzArchiver.java	2024-09-19 15:02:05.532769133 +0200
@@ -23,6 +23,7 @@
 import java.nio.file.attribute.PosixFileAttributeView;
 import java.nio.file.attribute.PosixFileAttributes;
 import java.util.ArrayList;
+import java.util.Date;
 import java.util.List;
 
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
@@ -131,6 +132,10 @@
             tarEntry.setMode(FilePermissionHelper.toOctalFileMode(attrs.permissions()));
         }
         tarEntry.setModTime(source.lastModified());
+        String sde = System.getenv("SOURCE_DATE_EPOCH");
+        if (sde != null) {
+            tarEntry.setModTime(new Date(1000 * Long.parseLong(sde)));
+        }
         return tarEntry;
     }