Accepting request 738093 from GNOME:Next

- Switch to git-checkout via source service, explicit tag. Upstream
  tarball is borked.

OBS-URL: https://build.opensuse.org/request/show/738093
OBS-URL: https://build.opensuse.org/package/show/GNOME:Factory/pango?expand=0&rev=203

pango.spec

@@ -23,7 +23,7 @@ Summary:        Library for Layout and Rendering of Text
 License:        LGPL-2.1-or-later
 Group:          Development/Libraries/C and C++
 URL:            https://pango.gnome.org/
-Source0:        https://download.gnome.org/sources/pango/1.44/%{name}-%{version}.tar.xz
+Source0:        %{name}-%{version}.tar.xz
 Source2:        macros.pango
 Source99:       baselibs.conf