Fix bug with fetch builder source replacement.

src/tito/builder/fetch.py

@@ -152,7 +152,7 @@ class ArgSourceStrategy(SourceStrategy):
 
             # Add a line to replace in the spec for each source:
             source_regex = re.compile("^(source%s:\s*)(.+)$" % i, re.IGNORECASE)
-            new_line = "Source%s: %s" % (i, base_name)
+            new_line = "Source%s: %s\n" % (i, base_name)
             replacements.append((source_regex, new_line))
 
         # Replace version and release in spec:

test/functional/specs/extsrc.spec

@@ -7,9 +7,9 @@ Summary:        tito test package for the external source builder
 URL:            https://example.com
 Group:          Applications/Internet
 License:        GPLv2
+Source0:        %{name}-%{version}.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-root-%(%{__id_u} -n)
 BuildArch:      noarch
-Source0:        %{name}-%{version}.tar.gz
 
 %description
 Nobody cares.

tito.spec

@@ -9,7 +9,6 @@ Group: Development/Tools
 License: GPLv2
 URL: http://rm-rf.ca/tito
 Source0: http://rm-rf.ca/files/tito/tito-%{version}.tar.gz
-
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildArch: noarch