diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2544502..3b67272 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -1,10 +1,11 @@
 name: Test
 on:
   delete:
-  push:
   pull_request:
+  push:
     branches:
       - main
+
 jobs:
   check_preconditions:
     runs-on: ubuntu-latest
diff --git a/Dockerfile b/Dockerfile
index 622cca1..7240ce8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,7 +5,8 @@ RUN apk update && apk upgrade && \
 
 RUN git lfs install
 
-COPY mirror.sh /mirror.sh
 COPY setup-ssh.sh /setup-ssh.sh
+COPY mirror.sh /mirror.sh
+COPY cleanup.sh /cleanup.sh
 
 ENTRYPOINT ["/mirror.sh"]
diff --git a/cleanup.sh b/cleanup.sh
new file mode 100755
index 0000000..86c5200
--- /dev/null
+++ b/cleanup.sh
@@ -0,0 +1,4 @@
+#!/usr/bin/env sh
+set -eu
+
+git remote remove "$1"
diff --git a/mirror.sh b/mirror.sh
index 67ea71f..61db2e3 100755
--- a/mirror.sh
+++ b/mirror.sh
@@ -6,3 +6,7 @@ set -eu
 export GIT_SSH_COMMAND="ssh -v -i ~/.ssh/id_rsa -o StrictHostKeyChecking=no -l $INPUT_SSH_USERNAME"
 git remote add mirror "$INPUT_TARGET_REPO_URL"
 git push --tags --force --prune mirror "refs/remotes/origin/*:refs/heads/*"
+
+# NOTE: Since `post` execution is not supported for local action from './' for now, we need to
+# run the command by hand.
+/cleanup.sh mirror