diff -Nru debian-installer-utils-1.129/debian/changelog debian-installer-utils-1.129+httpsredir/debian/changelog
--- debian-installer-utils-1.129/debian/changelog	2018-09-29 18:08:46.000000000 +0000
+++ debian-installer-utils-1.129+httpsredir/debian/changelog	2018-11-14 10:45:00.000000000 +0000
@@ -1,3 +1,11 @@
+debian-installer-utils (1.129+httpsredir) unstable; urgency=medium
+
+  * fetch-url-methods/http: use '--no-check-certificate' for HTTP as well
+    (iff 'debian-installer/allow_unauthenticated_ssl' is specified anyway)
+    to support HTTP to HTTPS redirects. (Closes: #NNNNNNN)
+
+ -- Mauricio Faria de Oliveira <mfo@canonical.com>  Wed, 14 Nov 2018 08:45:00 -0200
+
 debian-installer-utils (1.129) unstable; urgency=medium
 
   * Team upload
diff -Nru debian-installer-utils-1.129/fetch-url-methods/http debian-installer-utils-1.129+httpsredir/fetch-url-methods/http
--- debian-installer-utils-1.129/fetch-url-methods/http	2018-08-10 19:21:40.000000000 +0000
+++ debian-installer-utils-1.129+httpsredir/fetch-url-methods/http	2018-11-14 10:45:00.000000000 +0000
@@ -28,7 +28,7 @@
 
 	if wget --version 2>/dev/null | grep -q 'GNU Wget'; then
 		options=--no-verbose
-		if [ "https" = "$proto" ] && \
+		if [ "https" = "$proto" ] || [ "http" = "$proto" ] && \
 		   db_get debian-installer/allow_unauthenticated_ssl && [ "$RET" = true ]; then
 			options="$options --no-check-certificate"
 		fi