> ## Documentation Index > Fetch the complete documentation index at: https://docs.patch.gg/llms.txt > Use this file to discover all available pages before exploring further. # One commit and what it changes > At a branch, tag or commit: its message, parents, author and committer, and its files compared to its first parent, with each text file's patch in `git diff`'s hunks. In a repo's first commit, every file is added. A file with no patch says why in `no_patch`, and `truncated` says when anything was left out. 404 `ref_not_found`. ## OpenAPI ````yaml /api-reference/openapi.json get /projects/{owner}/{slug}/repo/commit openapi: 3.1.0 info: title: Patch API version: 1.0.0 description: >- The public API behind patch.gg, the desktop app and pch. Changes within v1 are additive only. Errors are { error: { code, message, details } }; branch on code. servers: - url: https://patch.gg/api/v1 security: [] paths: /projects/{owner}/{slug}/repo/commit: get: tags: - Repos summary: One commit and what it changes description: >- At a branch, tag or commit: its message, parents, author and committer, and its files compared to its first parent, with each text file's patch in `git diff`'s hunks. In a repo's first commit, every file is added. A file with no patch says why in `no_patch`, and `truncated` says when anything was left out. 404 `ref_not_found`. parameters: - schema: type: string example: patch required: true name: owner in: path - schema: type: string example: demo-mod required: true name: slug in: path - schema: type: string pattern: ^\S{1,255}$ description: >- A branch, a tag or a full commit hash: the default branch unless you say. A branch comes before a tag of the same name, and `refs/tags/v1` says which. example: main required: false description: >- A branch, a tag or a full commit hash: the default branch unless you say. A branch comes before a tag of the same name, and `refs/tags/v1` says which. name: ref in: query responses: '200': description: The commit content: application/json: schema: $ref: '#/components/schemas/RepoCommit' '308': description: Renamed; follow the Location header '400': description: Invalid request content: application/json: schema: $ref: '#/components/schemas/Error' '401': description: Not signed in content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: Not allowed content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: Not found content: application/json: schema: $ref: '#/components/schemas/Error' '409': description: '`on_github`: its home is GitHub, which has its files' content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: >- Too many requests: wait as long as `Retry-After` says (`retry_after_s` in `details`), then retry content: application/json: schema: $ref: '#/components/schemas/Error' '502': description: It couldn't be read content: application/json: schema: $ref: '#/components/schemas/Error' '503': description: Reading repos isn't set up here, or the repo is waking up content: application/json: schema: $ref: '#/components/schemas/Error' components: schemas: RepoCommit: allOf: - $ref: '#/components/schemas/RepoLogCommit' - type: object properties: message: type: string description: Its message, its first 64 KiB at most. ref: type: string description: >- The branch, tag or full commit hash it was asked for: the default branch unless given. base: type: - string - 'null' description: >- The commit `files` compares it to: its first parent. Null for a first commit. files: type: array items: type: object properties: path: type: string old_path: type: - string - 'null' description: Where it was, when it moved. status: type: string enum: - added - modified - deleted - renamed type: type: string enum: - blob - exec - symlink - gitlink old_blob: type: - string - 'null' description: >- Its git object before, shortened. For a submodule, the whole commit. blob: type: - string - 'null' description: >- Its git object after, shortened. For a submodule, the whole commit. additions: type: integer description: Lines added, when it has a patch. deletions: type: integer description: Lines removed, when it has a patch. patch: type: - string - 'null' description: >- Its changed lines, in the hunks `git diff` shows, with 3 lines around them. Bytes that aren't UTF-8 show as U+FFFD, so a patch with any won't apply. no_patch: type: - string - 'null' enum: - binary - big_file - too_big - too_much - null description: >- Why a file whose contents changed has no patch. binary: it isn't text. big_file: it's in Git LFS. too_big: its patch is over 1 MiB, or couldn't be read. too_much: the diff is too long to show it. big_file: type: - object - 'null' properties: old: type: - object - 'null' properties: sha256: type: string size: type: integer required: - sha256 - size new: type: - object - 'null' properties: sha256: type: string size: type: integer required: - sha256 - size required: - old - new description: The Git LFS files it points at, before and after. required: - path - old_path - status - type - old_blob - blob - additions - deletions - patch - no_patch - big_file description: What it changes. For a first commit, every file is added. truncated: type: boolean description: >- Whether anything was left out: patches stop at 300 files or 2 MiB, and the list at 3,000 files. required: - ref - base - files - truncated Error: type: object properties: error: type: object properties: code: type: string example: version_exists message: type: string details: {} required: - code - message required: - error RepoLogCommit: type: object properties: hash: type: string message: type: string description: >- Its subject, the message's first paragraph on one line: 4,000 characters at most. parents: type: array items: type: string description: Empty for a repo's first commit. author: type: object properties: name: type: string email: type: string required: - name - email committer: type: object properties: name: type: string email: type: string required: - name - email authored_at: type: string format: date-time committed_at: type: string format: date-time required: - hash - message - parents - author - committer - authored_at - committed_at ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.