fix: remove creation of errant HEAD branch on destination

action.yml

@@ -26,17 +26,13 @@ inputs:
   destination_ssh_private_key:
     description: SSH key used to authenticate with destination ssh url provided (optional if public or https url with authentication)
     required: false
-  update_head:
-    description: Update HEAD reference
-    required: false
 runs:
   using: 'docker'
   image: 'Dockerfile'
   env:
     SSH_PRIVATE_KEY: ${{ inputs.ssh_private_key }}
     SOURCE_SSH_PRIVATE_KEY: ${{ inputs.source_ssh_private_key }}
     DESTINATION_SSH_PRIVATE_KEY: ${{ inputs.destination_ssh_private_key }}
-    UPDATE_HEAD: ${{ inputs.update_head }}
   args:
     - ${{ inputs.source_repo }}
     - ${{ inputs.source_branch }}

git-sync.sh

@@ -38,11 +38,8 @@ fi
 git remote add destination "$DESTINATION_REPO"
 
 # Pull all branches references down locally so subsequent commands can see them
-if [[ -n "$UPDATE_HEAD" && "$UPDATE_HEAD" = true ]]; then
-  git fetch source '+refs/heads/*:refs/heads/*' --update-head-ok
-else
-  git fetch source '+refs/heads/*:refs/heads/*'
-fi
+git fetch source '+refs/heads/*:refs/heads/*' --update-head-ok
+git remote set-head source -d # remove HEAD; avoids later creation of an erroneous branch named "HEAD" at destination
 
 # Print out all branches
 git --no-pager branch -a -vv