diff --git a/mirror.sh b/mirror.sh
index 0f5bd44..f5318ba 100755
--- a/mirror.sh
+++ b/mirror.sh
@@ -8,7 +8,7 @@ chmod 600 "$HOME/.ssh/id_ed25519"
 URL="${GITHUB_SERVER_URL/\/\//\/\/$GITHUB_REPOSITORY_OWNER:$INPUT_TOKEN@}/$GITHUB_REPOSITORY"
 
 set -x
-git init -b main
+git init -b "$GITHUB_REF_NAME"
 git remote add origin "$URL"
 git fetch --no-tags --prune --no-recurse-submodules origin "$GITHUB_SHA"
-git push --repo="$INPUT_URL" origin "$GITHUB_SHA:$GITHUB_REF"
+git push --repo="$INPUT_URL" origin "$GITHUB_REF_NAME:$GITHUB_REF"