RTD: Fetch --unshallow (see readthedocs/readthedocs.org#5989)

effigies · effigies · commit cc5638d8b69c · 2023-01-05T11:24:21.000-05:00
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -4,6 +4,9 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.10"
+  jobs:
+    post_checkout:
+      - git fetch --unshallow
 
 python:
   install:
