Fix error with build workflow using wrong ref

Looking at the logs, it's using the ref before the one that increments
the version in the previous action in the workflow. This code is from
actions/checkout#439 (comment)
and supposedly fixes this by making it pull specifically from master,
rather than the ref that the workflow was called on.

.github/workflows/make_release.yaml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
     inputs:
       version:
-        description: 'Version of the new release'
+        description: 'Version of the new release, just as a number with no prepended "v"'
         required: true
 
 jobs:
@@ -32,6 +32,9 @@ jobs:
     needs: increment_version
     steps:
       - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          ref: master
       - name: Set up Python
         uses: actions/setup-python@v4
         with: