[gnome-text-editor] gitlab-ci: add only-default

[Christian Hergert <chergert src gnome org>]

commit 016764d9edf6f038b138d96368af4ced51b924e9
Author: Christian Hergert <chergert redhat com>
Date:   Wed Feb 2 17:00:04 2022 -0800

    gitlab-ci: add only-default

 .gitlab-ci.yml | 9 +++++++++
 1 file changed, 9 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index b1585c5..3044ab3 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -5,6 +5,12 @@ include:
 variables:
     FEDORA_IMAGE: "registry.gitlab.gnome.org/gnome/gtksourceview/fedora:latest"
 
+.only-default:
+    only:
+        - branches
+    except:
+        - tags
+
 flatpak:
     image: 'registry.gitlab.gnome.org/gnome/gnome-runtime-images/gnome:master'
     variables:
@@ -22,6 +28,9 @@ nightly:
     dependencies: ['flatpak']
     
 fedora:
+    extends: .only-default
+    only:
+        - branches@GNOME/gnome-text-editor
     image: $FEDORA_IMAGE
     needs: []
     variables: