Switch CI target to sha instead of ref

ansible/molecule/default/converge.yml

@@ -2,9 +2,9 @@
 - name: update previous release to newest release
   hosts: all
   tasks:
-    - name: set github ref as version when available
+    - name: set current github commit as version when available
       set_fact:
-        paperlessng_version: "{{ lookup('env', 'GITHUB_REF') | default('latest', True) }}"
+        paperlessng_version: "{{ lookup('env', 'GITHUB_SHA') | default('master', True) }}"
     - name: update to newest paperless-ng release
       include_role:
         name: ansible

ansible/tasks/main.yml

@@ -114,6 +114,12 @@
         paperlessng_version: "{{ latest_release.json['tag_name'] }}"
   when: paperlessng_version == "latest"
 
+- name: check if version is ref
+  fail:
+    msg: "Specifying `paperlessng_version` as git ref may not work as expected!"
+  ignore_errors: True  # Output failure (as warning), but don't consider play failed
+  when: paperlessng_version.startswith('refs/')
+
 - block:
     - name: sanitize version string
       set_fact: