fix(ci): Don't use shallow clone when we're comparing git history

.forgejo/workflows/update-flake-hashes.yml

@@ -7,6 +7,7 @@ on:
       - "Cargo.lock"
       - "Cargo.toml"
       - "rust-toolchain.toml"
+      - ".forgejo/workflows/update-flake-hashes.yml"
 
 jobs:
   update-flake-hashes:
@@ -14,7 +15,7 @@ jobs:
     steps:
       - uses: https://code.forgejo.org/actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
-          fetch-depth: 1
+          fetch-depth: 0
           fetch-tags: false
           fetch-single-branch: true
           submodules: false