diff --git a/.github/workflows/mcad-CI.yml b/.github/workflows/mcad-CI.yml
index 0d6ebbd03..614d3439c 100644
--- a/.github/workflows/mcad-CI.yml
+++ b/.github/workflows/mcad-CI.yml
@@ -19,7 +19,8 @@ jobs:
 
       - name: Set latest tag and Branch name
         run: |
-          echo "GIT_BRANCH=${{ github.event.pull_request.head.ref }}" >> $GITHUB_ENV
+          BRANCH=${{ github.event.pull_request.head.ref }}
+          echo "GIT_BRANCH=$(echo "$BRANCH" | sed 's/[^A-Za-z0-9._-]/-/g' )" >> $GITHUB_ENV
           echo "TAG=$(git describe --abbrev=0 --tags)" >> $GITHUB_ENV
 
       - name: Set up Go