@@ -1975,6 +1975,12 @@ Version `2022-11-28` is the first version of the GitHub Enterprise Cloud REST AP
 
   </details>
 
+{% endif %}
+{% if query.apiVersion == nil or "2022-11-28" <= query.apiVersion %}
+## Version 2022-11-28
+
+Version `2022-11-28` is the first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning was introduced. This version does not include any breaking changes.
+
 {% endif %}
 {% endif %}
 
@@ -2648,5 +2654,38 @@ Version `2022-11-28` is the first version of the GitHub Enterprise Cloud REST AP
 
   </details>
 
+{% endif %}
+{% if query.apiVersion == nil or "2022-11-28" <= query.apiVersion %}
+## Version 2022-11-28
+
+Version `2022-11-28` is the first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning was introduced. This version does not include any breaking changes.
+
+{% endif %}
+{% endif %}
+
+{% ifversion ghes = 3.20 %}
+{% if query.apiVersion == nil or "2022-11-28" <= query.apiVersion %}
+## Version 2022-11-28
+
+Version `2022-11-28` is the first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning was introduced. This version does not include any breaking changes.
+
+{% endif %}
+{% endif %}
+
+{% ifversion ghes = 3.19 %}
+{% if query.apiVersion == nil or "2022-11-28" <= query.apiVersion %}
+## Version 2022-11-28
+
+Version `2022-11-28` is the first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning was introduced. This version does not include any breaking changes.
+
+{% endif %}
+{% endif %}
+
+{% ifversion ghes = 3.18 %}
+{% if query.apiVersion == nil or "2022-11-28" <= query.apiVersion %}
+## Version 2022-11-28
+
+Version `2022-11-28` is the first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning was introduced. This version does not include any breaking changes.
+
 {% endif %}
 {% endif %}
@@ -10,6 +10,7 @@ const OUTPUT_PATH = 'data/reusables/rest-api/breaking-changes-changelog.md'
 interface VersionMapping {
   sourceDir: string
   ifversionExpr: string
+  shortName: string
 }
 
 interface VersionSection {
@@ -18,7 +19,8 @@ interface VersionSection {
 }
 
 // The initial REST API version predates rest-api-description changelogs, so
-// this fallback keeps the generated output complete. Keyed by ifversion expression.
+// this fallback keeps the generated output complete. Keyed by product short name.
+// GitHub Enterprise Server shares one entry across all releases.
 const INITIAL_VERSION = '2022-11-28'
 const INITIAL_VERSION_SECTIONS: Record<string, VersionSection> = {
   fpt: {
@@ -29,6 +31,10 @@ const INITIAL_VERSION_SECTIONS: Record<string, VersionSection> = {
     version: INITIAL_VERSION,
     content: `## Version ${INITIAL_VERSION}\n\nVersion \`${INITIAL_VERSION}\` is the first version of the GitHub Enterprise Cloud REST API after date-based versioning was introduced. This version does not include any breaking changes.`,
   },
+  ghes: {
+    version: INITIAL_VERSION,
+    content: `## Version ${INITIAL_VERSION}\n\nVersion \`${INITIAL_VERSION}\` is the first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning was introduced. This version does not include any breaking changes.`,
+  },
 }
 
 // buildVersionMappings maps docs short names to rest-api-description directories
@@ -60,7 +66,7 @@ function buildVersionMappings(versionNames: Record<string, string>): VersionMapp
       ifversionExpr = versionObj.shortName
     }
 
-    mappings.push({ sourceDir, ifversionExpr })
+    mappings.push({ sourceDir, ifversionExpr, shortName: versionObj.shortName })
   }
 
   return mappings
@@ -140,7 +146,7 @@ export async function syncChangelogs(
   const mappings = buildVersionMappings(versionNames)
   const outputBlocks: string[] = []
 
-  for (const { sourceDir, ifversionExpr } of mappings) {
+  for (const { sourceDir, ifversionExpr, shortName } of mappings) {
     const changelogPath = getChangelogPath(sourceRepoDir, sourceDir)
 
     let sections: VersionSection[]
@@ -155,8 +161,8 @@ export async function syncChangelogs(
 
     // Inject the hardcoded initial section when the source changelog lacks it for this product.
     const hasInitialVersion = sections.some((s) => s.version === INITIAL_VERSION)
-    if (!hasInitialVersion && ifversionExpr in INITIAL_VERSION_SECTIONS) {
-      sections.push(INITIAL_VERSION_SECTIONS[ifversionExpr])
+    if (!hasInitialVersion && shortName in INITIAL_VERSION_SECTIONS) {
+      sections.push(INITIAL_VERSION_SECTIONS[shortName])
     }
 
     if (sections.length === 0) {
 
@@ -304,7 +304,7 @@ This file has no version headings yet.`,
 
     await syncChangelogs(githubDir, versionNames, outputPath)
 
-    // fpt and ghec get hardcoded initial version entries even with no changelog files.
+    // Every product gets a hardcoded initial version entry even with no changelog files.
     const output = await readFile(outputPath, 'utf-8')
     expect(output).toContain('{% ifversion fpt %}')
     expect(output).toContain('{% ifversion ghec %}')
@@ -314,6 +314,43 @@ This file has no version headings yet.`,
     expect(output).toContain(
       'first version of the GitHub Enterprise Cloud REST API after date-based versioning',
     )
+
+    const { allVersions } = await import('@/versions/lib/all-versions')
+    const ghesVersion = Object.values(allVersions).find((v) => v.shortName === 'ghes')
+    if (!ghesVersion) return
+    expect(output).toContain(`{% ifversion ghes = ${ghesVersion.currentRelease} %}`)
+    expect(output).toContain(
+      'first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning',
+    )
+  })
+
+  test('injects hardcoded initial version for GHES when changelog lacks it', async () => {
+    const { allVersions } = await import('@/versions/lib/all-versions')
+    const ghesVersion = Object.values(allVersions).find((v) => v.shortName === 'ghes')
+    if (!ghesVersion) return
+
+    const release = ghesVersion.currentRelease
+    const githubDir = path.join(tmpDir, 'github')
+    await createChangelog(
+      githubDir,
+      `ghes-${release}`,
+      `# REST API Breaking Changes for GHES ${release}
+
+## Version 2026-03-10
+
+- **GHES breaking change**`,
+    )
+
+    await syncChangelogs(githubDir, versionNames, outputPath)
+
+    const output = await readFile(outputPath, 'utf-8')
+    const ghesBlock = output.split(`{% ifversion ghes = ${release} %}`)[1].split('{% ifversion ')[0]
+    expect(ghesBlock).toContain('GHES breaking change')
+    expect(ghesBlock.match(/## Version 2022-11-28/g)).toHaveLength(1)
+    expect(ghesBlock).toContain(
+      'first version of the {% data variables.product.prodname_ghe_server %} REST API after date-based versioning',
+    )
+    expect(ghesBlock.indexOf('"2026-03-10"')).toBeLessThan(ghesBlock.indexOf('"2022-11-28"'))
   })
 
   test('does not duplicate initial version when changelog already includes it', async () => {