abuild-sign: set permissions on signed index to 644

mktemp set it to 600 so we need to manually set it to 644

abuild-sign.in

@@ -80,6 +80,7 @@ for f in "$@"; do
 	cat "$tmptargz" "$i" > "$tmpsigned"
 	rm -f "$tmptargz"
 	mv "$tmpsigned" "$i"
+	chmod 644 "$i"
 	if [ -z "$quiet" ]; then
 		echo "Signed $i"
 	fi