Initial commit

Signed-off-by: Vasiliy Doylov <nekocwd@mainlining.org>

action.yaml

@@ -0,0 +1,39 @@
+name: "Rebase repo to mirrored upstream"
+description: "Rebase repo to mirrored upstream"
+inputs:
+  name:
+    description: "Repository name"
+    required: true
+  branch:
+    description: "Upstream rebase target branch"
+    required: true
+  secret:
+    description: "Repo push token"
+    required: true
+
+runs:
+  using: "composite"
+  steps:
+    - name: Check out repository code
+      uses: actions/checkout@v4
+      with:
+        fetch-depth: 0
+        token: ${{ inputs.secret }}
+
+    - name: Set git user
+      shell: sh
+      run: >
+        git config --global user.email "bot@mail.nekocwd.duckdns.org" &&
+        git config --global user.name "Kitsune (Rebase Bot)"
+    - name: Add upstream remote
+      shell: sh
+      run: git remote add upstream ${{ github.server_url }}/mirror/${{ inputs.name }}
+    - name: Fetch upstream changes
+      shell: sh
+      run: git fetch upstream
+    - name: Rebase changes
+      shell: sh
+      run: git rebase upstream/${{ inputs.branch }}
+    - name: Push changes
+      shell: sh
+      run: git push --force