Combine a branch’s changes into one new commit.

Git: Squash prepares the combined changes in the index without recording a merge parent.

Shell terminal
set -euo pipefail
git merge -q --squash feature >/dev/null
git commit -qm 'Combined feature'
git log -1 --format=%s
git rev-list --count HEAD

Expected output EXAMPLE

Combined feature
2

Details

Requires Git and Bash. Run in a disposable practice repository. The test setup below creates the starting files and commits. Squash prepares the combined changes in the index without recording a merge parent. The input setup creates a disposable practice repository with a fictional local author identity. Run these examples only in that repository.

✓ Verified

Tested on Ubuntu 24.04.5 LTS · · git version 2.43.0 · git 1:2.43.0-1ubuntu7.3

Test inputs, results and environment

The exact published code ran in a dedicated Linux test container with prepared inputs. Snippet process uid 65534 with a read-only root filesystem and temporary working files. Networking disabled. Fixtures and output records are isolated from the application database. Testing covers this example and its stated checks, not every input, operating system, or runtime version. The Linux container shares its host's kernel; this is not a native Windows test.

Architecture / host kernel
x86_64 / 6.18.54.1-microsoft-standard-WSL2
Snippet identity / locale
uid=65534, gid=65534 (unprivileged process) / C.UTF-8
Interpreter invocation
bash -euo pipefail -c <published code>
Container image ID
sha256:ec91410a8f6ec3e985830b5e3a0560306d36f8c1c5ccd91a6699abe707123fa3
Code SHA-256
7635f4d5fb359cd3b94d08771d38835749b5bf4f365c96e9aed778c9eea1a27d
Dependencies
git 1:2.43.0-1ubuntu7.3

Test input setup

These are the prepared inputs used by the test harness. See Details above for the prerequisites and how to run this example.

git init -q -b main
git config user.name 'Example Developer'
git config user.email 'developer@example.invalid'
git config commit.gpgsign false
git config tag.gpgsign false
git config color.ui false
printf 'first
' > note.txt
git add note.txt
git commit -qm 'Initial notes'
git switch -q -c feature
printf 'second\n' >> note.txt; git add note.txt; git commit -qm 'Expand notes'
git commit -q --allow-empty -m 'Extra work'
git switch -q main

Observed standard output

Combined feature
2

Exit code: 0. Standard error: empty. Validation: Exact stdout comparison. System-dependent values above are one recorded run.