repurpose transpile-push script to transpile-branch

.github/workflows/transpile.yml

@@ -28,4 +28,5 @@ jobs:
           restore-keys: npm-v2-
       - run: npm ci
         if: steps.cache.outputs.cache-hit != 'true'
-      - run: bash scripts/upgrade-safe/transpile-push.sh
+      - run: bash scripts/upgrade-safe/transpile-branch.sh master origin/master
+      - run: git push origin master

scripts/upgrade-safe/transpile-branch.sh

+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [ $# -lt 1 ]; then
+  echo "usage: bash $0 <branch> [base]" >&2
+  exit 1
+fi
+
+set -x
+
+branch="$1"
+base="${2:-}"
+
+bash scripts/upgrade-safe/transpile.sh
+bash scripts/upgrade-safe/git-user-config.sh
+
+commit="$(git rev-parse --short HEAD)"
+
+git add contracts
+git checkout --orphan "$branch"
+
+if [ -n "$base" ]; then
+  git reset --soft "$base"
+fi
+
+if ! git diff --cached --quiet; then
+  git commit -m "Transpile $commit"
+fi

scripts/upgrade-safe/transpile-push.sh

-#!/usr/bin/env bash
-
-set -euo pipefail -x
-
-bash scripts/upgrade-safe/transpile.sh
-bash scripts/upgrade-safe/git-user-config.sh
-
-COMMIT="$(git rev-parse --short HEAD)"
-
-git add contracts
-git checkout --orphan master
-git reset --soft origin/master
-if ! git diff --cached --quiet; then
-  git commit -m "Transpile $COMMIT"
-fi
-git push origin master