ci: Add missing ENV variable

TARGET_BRANCH was lost during refactoring of CI from a single script to
multiple github jobs

(also fix existing formatting issues)

Author: NickeZ

.github/workflows/ci-common.yml

@@ -10,6 +10,9 @@ on:
       container-version:
         required: true
         type: string
+      base-sha:
+        required: true
+        type: string
 env:
   RUSTFLAGS: "-Dwarnings"
   CFLAGS: "-Werror"
@@ -38,6 +41,8 @@ jobs:
   lint-py:
     runs-on: ubuntu-22.04
     container: ${{ inputs.container-repo }}:${{ inputs.container-version }}
+    env:
+      TARGET_BRANCH: ${{ inputs.base-sha }}
     steps:
       - name: Clone the repo
         uses: actions/checkout@v4
@@ -57,6 +62,8 @@ jobs:
     runs-on: ubuntu-22.04
     container:
       image: ${{ inputs.container-repo }}:${{ inputs.container-version }}
+    env:
+      TARGET_BRANCH: ${{ inputs.base-sha }}
     steps:
       - name: Clone the repo
         uses: actions/checkout@v4

.github/workflows/ci.yml

@@ -24,4 +24,5 @@ jobs:
     with:
       container-version: ${{ needs.dev-container.outputs.container-version }}
       container-repo: ${{ needs.dev-container.outputs.container-repo }}
+      base-sha: ${{ github.event.before }}
     secrets: inherit

.github/workflows/pr-ci.yml

@@ -21,6 +21,7 @@ jobs:
     with:
       container-repo: ${{ needs.dev-container.outputs.container-repo }}
       container-version: ${{ needs.dev-container.outputs.container-version }}
+      base-sha: ${{ github.event.pull_request.base.sha }}
     secrets: inherit
 
   # Build the firmware on every commit to simplify bisecting the firmware