diff --git a/packages/github/src/index.ts b/packages/github/src/index.ts
index 64229fb..dcc981a 100644
--- a/packages/github/src/index.ts
+++ b/packages/github/src/index.ts
@@ -3,8 +3,10 @@ import * as Context from 'effect/Context'
 import { Octokit } from '@octokit/rest'
 import { pipe } from 'effect/Function'
 import * as Layer from 'effect/Layer'
+import * as S from '@effect/schema/Schema'
 
-export const GitHub = Context.Tag<Octokit>('GitHub')
+export type GitHub = Octokit
+export const GitHub = Context.Tag<GitHub>('GitHub')
 
 /**
  * Returns the contents of a file from a GitHub repository
@@ -95,3 +97,56 @@ export const createOrUpdateFileContents = (args: {
 
 export const makeGitHubLayer = (token?: string) =>
   Layer.succeed(GitHub, GitHub.of(new Octokit({ auth: token })))
+
+export const GitCommit = S.struct({
+  sha: S.string,
+  node_id: S.string,
+  url: S.string,
+  author: S.struct({
+    date: S.string,
+    email: S.string,
+    name: S.string,
+  }),
+  committer: S.struct({
+    date: S.string,
+    email: S.string,
+    name: S.string,
+  }),
+  message: S.string,
+  tree: S.struct({
+    sha: S.string,
+    url: S.string,
+  }),
+  parents: S.array(
+    S.struct({
+      sha: S.string,
+      url: S.string,
+      html_url: S.string,
+    })
+  ),
+  verification: S.struct({
+    verified: S.boolean,
+    reason: S.string,
+    signature: S.nullable(S.string),
+    payload: S.nullable(S.string),
+  }),
+  html_url: S.string,
+})
+export type GitCommit = S.Schema.To<typeof GitCommit>
+
+// https://docs.github.com/en/rest/git/commits?apiVersion=2022-11-28#get-a-commit-object
+export const getCommit = (args: {
+  owner: string
+  repo: string
+  commit_sha: string
+}): Effect.Effect<GitHub, unknown, GitCommit> =>
+  Effect.flatMap(GitHub, (api) =>
+    Effect.tryPromise(() =>
+      api
+        .request('GET /repos/{owner}/{repo}/git/commits/{commit_sha}', {
+          headers: { 'X-GitHub-Api-Version': '2022-11-28' },
+          ...args,
+        })
+        .then((x) => x.data)
+    )
+  )