scripts/import_gmane_spool | 3 +++

diff --git a/scripts/import_gmane_spool b/scripts/import_gmane_spool
index d96c26c8f5c2f21353342bd5d752f1877ea8301a..e072b810d5c1275c2f3acec6fef0e10942ec4e76 100755
--- a/scripts/import_gmane_spool
+++ b/scripts/import_gmane_spool
@@ -41,6 +41,9 @@ 			$s->header_set("Received", @h);
 			$s->header_set("Original-Received");
 		}
 
+		# this is needed for "git rev-list --since=..." to work
+		local $ENV{GIT_COMMITTER_DATE} = $s->header('Date');
+
 		# triggers for the SA HEADER_SPAM rule
 		foreach my $drop (qw(Approved)) { $s->header_set($drop) }