chore: pin typos as a local hook so autoupdate can't unpin it

.pre-commit-config.yaml

@@ -9,10 +9,19 @@ repos:
       - id: trailing-whitespace
         # rustfmt handles rust files, and in some snapshots we expect trailing spaces.
         exclude: '.*\.(rs|snap)$'
-  - repo: https://github.com/crate-ci/typos
-    rev: v1
+  # A local hook rather than the crate-ci/typos repo hook: that repo's moving
+  # tags (`v1`, `typos-dict-*`) make autoupdate rewrite any pinned rev back to
+  # a mutable reference (#5481 and #5510 both pinned; the next autoupdate
+  # reverted each). A local hook has no rev, so the pin below sticks.
+  - repo: local
     hooks:
       - id: typos
+        name: typos
+        language: python
+        additional_dependencies: ["typos==1.48.0"]
+        entry: typos
+        args: [--write-changes, --force-exclude]
+        types: [text]
         # https://github.com/crate-ci/typos/issues/347
         pass_filenames: false
   - repo: https://github.com/rbubley/mirrors-prettier