diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index fef00b09a902..8c4c7e7c1921 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -77,6 +77,7 @@ jobs:
               'ci/github-script/bot.js',
               'ci/github-script/check-target-branch.js',
               'ci/github-script/commits.js',
+              'ci/github-script/get-pr-commit-details.js',
               'ci/github-script/lint-commits.js',
               'ci/github-script/merge.js',
               'ci/github-script/prepare.js',
diff --git a/ci/github-script/get-pr-commit-details.js b/ci/github-script/get-pr-commit-details.js
new file mode 100644
index 000000000000..07ac10faa44f
--- /dev/null
+++ b/ci/github-script/get-pr-commit-details.js
@@ -0,0 +1,93 @@
+// @ts-check
+const { promisify } = require('node:util')
+const execFile = promisify(require('node:child_process').execFile)
+
+/**
+ * @param {{
+ *  args: string[]
+ *  core: import('@actions/core'),
+ *  quiet?: boolean,
+ *  repoPath?: string,
+ * }} RunGitProps
+ */
+async function runGit({ args, repoPath, core, quiet }) {
+  if (repoPath) {
+    args = ['-C', repoPath, ...args]
+  }
+
+  if (!quiet) {
+    core.info(`About to run \`git ${args.map((s) => `'${s}'`).join(' ')}\``)
+  }
+
+  return await execFile('git', args)
+}
+
+/**
+ * GitHub's API will return a maximum of 250 commits.
+ * We will use it if we can, but fall back to using git locally.
+ *
+ * @param {{
+ *  context: import('@actions/github/lib/context').Context,
+ *  core: import('@actions/core'),
+ *  github: InstanceType<import('@actions/github/lib/utils').GitHub>,
+ *  pr: Awaited<ReturnType<InstanceType<import('@actions/github/lib/utils').GitHub>["rest"]["pulls"]["get"]>>["data"]
+ *  repoPath?: string,
+ * }} GetCommitMessagesForPRProps
+ *
+ * @returns {Promise<{
+ *  message: string,
+ *  sha: string,
+ * }[]>}
+ */
+async function getCommitDetailsForPR({ context, core, github, pr, repoPath }) {
+  if (pr.commits < 250) {
+    return (
+      await github.paginate(github.rest.pulls.listCommits, {
+        ...context.repo,
+        pull_number: pr.number,
+      })
+    ).map((commit) => ({ message: commit.commit.message, sha: commit.sha }))
+  } else {
+    await runGit({
+      args: ['fetch', `--depth=1`, 'origin', pr.base.sha],
+      repoPath,
+      core,
+    })
+    await runGit({
+      args: ['fetch', `--depth=${pr.commits + 1}`, 'origin', pr.head.sha],
+      repoPath,
+      core,
+    })
+
+    const shas = (
+      await runGit({
+        args: [
+          'rev-list',
+          `--max-count=${pr.commits}`,
+          `${pr.base.sha}..${pr.head.sha}`,
+        ],
+        repoPath,
+        core,
+      })
+    ).stdout
+      .split('\n')
+      .map((s) => s.trim())
+      .filter(Boolean)
+
+    return Promise.all(
+      shas.map(async (sha) => ({
+        sha,
+        message: (
+          await runGit({
+            args: ['log', '--format=%s', '-1', sha],
+            repoPath,
+            core,
+            quiet: true,
+          })
+        ).stdout,
+      })),
+    )
+  }
+}
+
+module.exports = { getCommitDetailsForPR }
diff --git a/ci/github-script/lint-commits.js b/ci/github-script/lint-commits.js
index 21d709cadcbe..ddc422f9114c 100644
--- a/ci/github-script/lint-commits.js
+++ b/ci/github-script/lint-commits.js
@@ -1,27 +1,6 @@
 // @ts-check
 const { classify } = require('../supportedBranches.js')
-const { promisify } = require('node:util')
-const execFile = promisify(require('node:child_process').execFile)
-
-/**
- * @param {{
- *  args: string[]
- *  core: import('@actions/core'),
- *  quiet?: boolean,
- *  repoPath?: string,
- * }} RunGitProps
- */
-async function runGit({ args, repoPath, core, quiet }) {
-  if (repoPath) {
-    args = ['-C', repoPath, ...args]
-  }
-
-  if (!quiet) {
-    core.info(`About to run \`git ${args.map((s) => `'${s}'`).join(' ')}\``)
-  }
-
-  return await execFile('git', args)
-}
+const { getCommitDetailsForPR } = require('./get-pr-commit-details.js')
 
 /**
  * @param {{
@@ -67,65 +46,13 @@ async function checkCommitMessages({ github, context, core, repoPath }) {
     return
   }
 
-  /**
-   * GitHub's API will return a maximum of 250 commits.
-   * We will use it if we can, but fall back to using git locally.
-   * This type is used to abstract over the differences between the two.
-   * @type {{
-   *  message: string,
-   *  sha: string,
-   * }[]}
-   */
-  let commits
-
-  if (pr.commits < 250) {
-    commits = (
-      await github.paginate(github.rest.pulls.listCommits, {
-        ...context.repo,
-        pull_number,
-      })
-    ).map((commit) => ({ message: commit.commit.message, sha: commit.sha }))
-  } else {
-    await runGit({
-      args: ['fetch', `--depth=1`, 'origin', pr.base.sha],
-      repoPath,
-      core,
-    })
-    await runGit({
-      args: ['fetch', `--depth=${pr.commits + 1}`, 'origin', pr.head.sha],
-      repoPath,
-      core,
-    })
-
-    const shas = (
-      await runGit({
-        args: [
-          'rev-list',
-          `--max-count=${pr.commits}`,
-          `${pr.base.sha}..${pr.head.sha}`,
-        ],
-        repoPath,
-        core,
-      })
-    ).stdout
-      .split('\n')
-      .map((s) => s.trim())
-      .filter(Boolean)
-
-    commits = await Promise.all(
-      shas.map(async (sha) => ({
-        sha,
-        message: (
-          await runGit({
-            args: ['log', '--format=%s', '-1', sha],
-            repoPath,
-            core,
-            quiet: true,
-          })
-        ).stdout,
-      })),
-    )
-  }
+  const commits = await getCommitDetailsForPR({
+    context,
+    core,
+    github,
+    pr,
+    repoPath,
+  })
 
   const failures = new Set()