Introduction

Git’s built-in commit.template setting points to a static file, not to an executable script. If you want a dynamic or scripted commit template, the practical approaches are to generate a temporary template file before running git commit, or to use Git hooks such as prepare-commit-msg to edit the message buffer automatically.

What commit.template Actually Does

A normal static template is configured like this:

git config commit.template ~/.gitmessage.txt

When you run git commit without -m, Git opens your editor with that file’s contents. The file is read as text. Git does not execute it as a program.

So if the question is “can I point commit.template directly at a script and have Git run it,” the answer is effectively no.

Option 1: Generate a Template File with a Script

One approach is to write a script that creates a temporary file and then calls git commit -t.

1#!/usr/bin/env bash
2set -e
3
4tmpfile=$(mktemp)
5cat > "$tmpfile" <<EOF_MSG
6Summary:
7
8Details:
9- branch: $(git branch --show-current)
10- ticket:
11EOF_MSG
12
13git commit -t "$tmpfile"
14rm -f "$tmpfile"

This gives you a scripted commit message template, but the scripting happens outside Git’s static template setting.

Option 2: Use prepare-commit-msg

For many teams, the more Git-native approach is a hook. The prepare-commit-msg hook can modify the commit message file before the editor opens.

1#!/usr/bin/env bash
2message_file="$1"
3branch_name=$(git branch --show-current)
4
5{
6  echo "[$branch_name] "
7  echo
8  cat "$message_file"
9} > "$message_file.tmp"
10
11mv "$message_file.tmp" "$message_file"

Save that as .git/hooks/prepare-commit-msg and make it executable.

chmod +x .git/hooks/prepare-commit-msg

This is often the best answer when you want context-aware message scaffolding such as branch names, ticket numbers, or checklist sections.

Hooks Are Better for Dynamic Context

A hook can inspect:

• current branch name
• staged files
• merge state
• squash or amend context
• environment variables from your tooling

That makes hooks far more suitable for dynamic commit-message generation than a static template file.

Be Careful with Shared Workflows

Git hooks do not automatically travel with the repository in the same way normal tracked files do. If the whole team depends on a scripted template, you need a way to distribute and install the hook consistently.

Common approaches include:

• a repository script that installs hooks
• a shared hooks path via core.hooksPath
• wrapper tooling around git commit

Static Templates Still Have Value

If the main goal is consistency rather than dynamic content, a normal static commit template is simpler and easier to maintain.

1Summary:
2
3Why:
4
5Testing:

Sometimes a static template plus a commit-message lint rule is enough. Scripting adds power, but also maintenance cost.

Common Pitfalls

A common mistake is assuming commit.template executes files instead of reading them. Another is building complex hook logic that depends on tools not installed on every developer machine. Developers also often forget that local hooks are not automatically shared with collaborators, which leads to inconsistent commit-message behavior across the team. Finally, if the hook rewrites too much text aggressively, it can make normal commits slower and more frustrating than the original manual workflow.

Summary

• 'commit.template reads a static text file; it does not run scripts.'
• For scripted templates, use a wrapper script or the prepare-commit-msg hook.
• Hooks are the better choice when the template depends on branch names or staged files.
• Static templates remain the simplest option when the content does not need to change dynamically.
• If the workflow is shared, plan how hooks or wrapper scripts will be distributed and maintained.