[workflows/build.yml] Revise build for nightly

* Check out explicit HEAD
* Actually commit released version
* Fix explicit checkout branches

.github/workflows/build.yml

@@ -6,12 +6,19 @@ on:
       build-commit:
         type: string
         required: true
+      push-version-commit:
+        type: boolean
+        default: true
   workflow_dispatch:
     inputs:
       build-commit:
         description: 'SHA of commit being built'
         type: string
         required: false
+      push-version-commit:
+        description: 'Update master if set'
+        type: boolean
+        default: true
 
 jobs:
   build_unix:
@@ -26,8 +33,10 @@ jobs:
       sha512_tar: ${{ steps.sha512_tar.outputs.sha512_tar }}
 
     steps:
-    - uses: actions/checkout@v3
+    - name: Check out
+      uses: actions/checkout@v3
       with:
+        ref: refs/heads/master
         fetch-depth: 0
     - name: Set up Python
       uses: actions/setup-python@v4
@@ -47,7 +56,17 @@ jobs:
         make issuetemplates
     - name: Push to release
       id: push_release
-      run: echo "head_sha=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
+      run: |
+        git config --global user.name github-actions
+        git config --global user.email github-actions@example.com
+        git add -u
+        git commit -m "Release (nightly) ${{ steps.update_version.outputs.version }}" \
+          -m "Created by: ${{ github.event.sender.login }}" -m ":ci skip all"
+        git push origin --force master:release
+        echo "head_sha=$(git rev-parse HEAD)" >> "$GITHUB_OUTPUT"
+    - name: Update master
+      if: ${{ inputs.push-version-commit }}
+      run: git push origin master
     - name: Get Changelog      
       id: get_changelog
       run: |
@@ -114,6 +133,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+      with:
+        ref: refs/heads/release
     # reason to choose 3.4: https://media.discordapp.net/attachments/807245652072857613/942409077701619742/unknown.png
     - name: Set up Python 3.4
       uses: actions/setup-python@v4
@@ -126,15 +147,6 @@ jobs:
       # https://pip.pypa.io/en/stable/news/#v19-2
       # https://wheel.readthedocs.io/en/stable/news.html
       run: python -m pip install --upgrade "pip<19.2" "setuptools<44" "wheel<0.34.0" py2exe==0.9.2.2
-    - name: Bump version
-      id: bump_version
-      shell: bash
-      run: |
-        ytdl_version=$(python devscripts/update-version.py)
-        sha=${{ inputs.build-commit }}
-        sed -i -rn -e '/^ *RELEASE_GIT_HEAD *=/z;$s/$/&'"\nRELEASE_GIT_HEAD = '${sha}'/;p" youtube_dl/version.py
-        x=${sha#?????????}; sha=${sha%$x}
-        echo "Version = $ytdl_version${sha+[ }${sha}${sha+]}"
     # - name: Run PyInstaller Script
     #   run: python -m PyInstaller --onefile --console --distpath dist/ -n youtube-dl youtube_dl\__main__.py
     - name: Cache PyCrypto