diff --git a/snippets/cloud-init.sh b/snippets/cloud-init.sh
new file mode 100644
index 0000000..e4963b3
--- /dev/null
+++ b/snippets/cloud-init.sh
@@ -0,0 +1,27 @@
+#!/usr/bin/env sh
+
+##
+# Re-run everything.
+##
+
+# 1. Clean the existing configuration.
+sudo cloud-init clean --logs
+
+# 2. Detect local data sources.
+sudo cloud-init init --local
+
+# 3. Detect any data source requiring the network and run the 'initialization' modules.
+sudo cloud-init init
+
+# 4. Run the 'configuration' modules.
+sudo cloud-init modules --mode='config'
+
+# 5. Run the 'final' modules.
+sudo cloud-init modules -m 'final'
+
+# All together now!
+sudo cloud-init clean --logs
+sudo cloud-init init --local
+sudo cloud-init init
+sudo cloud-init modules --mode='config'
+sudo cloud-init modules -m 'final'
diff --git a/snippets/git.change-the-default-branch-from-master-to-main.sh b/snippets/git.sh
old mode 100755
new mode 100644
similarity index 50%
rename from snippets/git.change-the-default-branch-from-master-to-main.sh
rename to snippets/git.sh
index a6bb3e8..f734f79
--- a/snippets/git.change-the-default-branch-from-master-to-main.sh
+++ b/snippets/git.sh
@@ -1,7 +1,19 @@
-#!/bin/sh
+#!/usr/bin/env sh
 
-# sources:
-# - https://stevenmortimer.com/5-steps-to-change-github-default-branch-from-master-to-main/
+##
+# Remove files from the latest commit.
+# The easiest way is to use `git gui`: 'Commit' => 'Amend Last Commit' => uncheck the files => 'Commit'.
+##
+
+git reset --soft HEAD~1                     # or `git reset --soft HEAD^`
+git restore --staged '.lefthook-local.yml'  # or `git reset HEAD '.lefthook-local.yml'`
+git commit -c ORIG_HEAD
+
+
+##
+# Change the default branch from 'master' to 'main'.
+# Source: https://stevenmortimer.com/5-steps-to-change-github-default-branch-from-master-to-main/
+##
 
 # create main branch locally, taking the history from master
 git branch --move 'master' 'main'
diff --git a/snippets/gitlab.package.sh b/snippets/gitlab.package.sh
index f1eccbf..20242ab 100644
--- a/snippets/gitlab.package.sh
+++ b/snippets/gitlab.package.sh
@@ -84,12 +84,11 @@ gitlab-rails runner '
 
 # Package upgrade
 sudo yum check-update
-sudo yum info 'gitlab-ee'        # informational
-sudo rpm -qa | grep 'gitlab-ee'  # informational
+sudo yum info 'gitlab-ee'                                              # informational
+sudo rpm -qa | grep 'gitlab-ee'                                        # informational
 sudo yum --showduplicates list available 'gitlab-ee'
-sudo gitlab-backup create        # not strictly necessary: the upgrade will create a partial one
-tmux new-session -A -s 'gitlab-upgrade' "sudo yum update 'gitlab-ee'"
-tmux new-session -A -s 'gitlab-upgrade' "sudo yum update 'gitlab-ee-16.11.3'"
+sudo gitlab-backup create                                              # not strictly necessary: the upgrade will create a partial one
+tmux new-session -A -s 'gitlab-upgrade' "sudo yum update 'gitlab-ee'"  # 'gitlab-ee-16.11.3' if version-specific
 sudo gitlab-rake 'gitlab:check'
 
 # Password reset