fix ref name context variable

.ci/setup_build_repo_branch.sh

@@ -3,7 +3,7 @@ set -e
 
 cd build/LatexPackagesBuild
 
-REMOTE_BRANCH=$(git branch -a | sed -n '/remotes\/origin\/.*-build/p' | sed 's/remotes\/origin\///g' | sed 's/-build//g' | sed 's/[[:space:]]//g' | sed -n "/^${CI_COMMIT_REF_NAME}$/p")
+REMOTE_BRANCH=$(git branch -a | sed -n '/remotes\/origin\/.*-build/p' | sed 's/remotes\/origin\///g' | sed 's/-build//g' | sed 's/[[:space:]]//g' | sed -n "/^${REF_NAME}$/p")
 
 echo ${REMOTE_BRANCH}
 

.gitea/workflows/build.yaml

@@ -22,8 +22,8 @@ jobs:
       - name: Checkout correct branch in build repository
         run: |
           .ci/setup_build_repo_branch.sh
-          cd build/LatexPackagesBuild
-          git ls-remote --heads
+        env:
+          REF_NAME: ${{ github.ref_name }}
       - name: Build packages
         run: |
           .ci/ci_build.sh # Note that this includes pushing to the build mirror