diff --git a/.github/actions/checkout/action.yml b/.github/actions/checkout/action.yml
index e3c592f6e53a..751eef7600cd 100644
--- a/.github/actions/checkout/action.yml
+++ b/.github/actions/checkout/action.yml
@@ -6,7 +6,7 @@ inputs:
   merged-as-untrusted-at:
     description: "Whether and which SHA to checkout for the merge commit in the ./untrusted folder."
     type: boolean
-  pinnedFrom:
+  pinned-from:
     description: "Whether to checkout the pinned nixpkgs for CI and from where (trusted, untrusted)."
     type: string
   target-as-trusted-at:
@@ -31,21 +31,21 @@ runs:
         ref: ${{ inputs.target-as-trusted-at }}
         path: trusted
 
-    - if: inputs.pinnedFrom
+    - if: inputs.pinned-from
       id: pinned
       uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
       env:
-        PINNED_FROM: ${{ inputs.pinnedFrom }}
+        PINNED_FROM: ${{ inputs.pinned-from }}
       with:
         script: |
           const path = require('node:path')
           const pinned = require(path.resolve(path.join(process.env.PINNED_FROM, 'ci', 'pinned.json')))
-          core.setOutput('pinnedSha', pinned.pins.nixpkgs.revision)
+          core.setOutput('pinned-at', pinned.pins.nixpkgs.revision)
 
-    - if: steps.pinned.outputs.pinnedSha
+    - if: steps.pinned.outputs.pinned-at
       uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       with:
-        ref: ${{ steps.pinned.outputs.pinnedSha }}
+        ref: ${{ steps.pinned.outputs.pinned-at }}
         path: pinned
         sparse-checkout: |
           lib
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index d8fe8272d625..9cfc329107ad 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -51,7 +51,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
-          pinnedFrom: untrusted
+          pinned-from: untrusted
 
       - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31
         with:
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index aca22eddff6b..dcbc5af199b8 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -103,7 +103,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
-          pinnedFrom: trusted
+          pinned-from: trusted
           target-as-trusted-at: ${{ inputs.targetSha }}
 
       - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31
diff --git a/.github/workflows/eval.yml b/.github/workflows/eval.yml
index a92e64de6715..c19549a4eb47 100644
--- a/.github/workflows/eval.yml
+++ b/.github/workflows/eval.yml
@@ -91,7 +91,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
-          pinnedFrom: untrusted
+          pinned-from: untrusted
 
       - name: Install Nix
         uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31
@@ -208,7 +208,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           target-as-trusted-at: ${{ inputs.targetSha }}
-          pinnedFrom: trusted
+          pinned-from: trusted
 
       - name: Download output paths and eval stats for all systems
         uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 817f42d496ad..97387126eb57 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -28,7 +28,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
-          pinnedFrom: untrusted
+          pinned-from: untrusted
 
       - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31
 
@@ -59,7 +59,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
-          pinnedFrom: untrusted
+          pinned-from: untrusted
 
       - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31
 
@@ -79,7 +79,7 @@ jobs:
         uses: ./.github/actions/checkout
         with:
           merged-as-untrusted-at: ${{ inputs.mergedSha }}
-          pinnedFrom: untrusted
+          pinned-from: untrusted
           target-as-trusted-at: ${{ inputs.targetSha }}
 
       - uses: cachix/install-nix-action@fc6e360bedc9ee72d75e701397f0bb30dce77568 # v31