diff --git a/buck2-test-authority.json b/buck2-test-authority.json
index cc10ad8cf4..8bae2f506a 100644
--- a/buck2-test-authority.json
+++ b/buck2-test-authority.json
@@ -840,6 +840,7 @@
         "src/cli/store.integration.test.ts",
         "src/cli/sync.integration.test.ts",
         "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts",
         "src/core/nix-lock/mod.integration.test.ts",
@@ -887,6 +888,7 @@
         "src/cli/worktree-lease.integration.test.ts",
         "src/core/config.unit.test.ts",
         "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts",
         "src/core/git.unit.test.ts",
@@ -963,6 +965,7 @@
         "src/cli/worktree-lease.integration.test.ts",
         "src/core/config.unit.test.ts",
         "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts",
         "src/core/git.unit.test.ts",
@@ -1029,6 +1032,7 @@
         "src/cli/store.integration.test.ts",
         "src/cli/sync.integration.test.ts",
         "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts",
         "src/core/nix-lock/mod.integration.test.ts",
diff --git a/packages/@overeng/megarepo/BUCK b/packages/@overeng/megarepo/BUCK
index 9e8d651ef0..bdfd6a6638 100644
--- a/packages/@overeng/megarepo/BUCK
+++ b/packages/@overeng/megarepo/BUCK
@@ -7,7 +7,7 @@ load("//buck2/products:defs.bzl", "javascript_product")
 # Projection source: packages/@overeng/megarepo/BUCK.genie.ts
 # Projection schema version: 13
 # Projection generator: effect-utils/genie/buck2-typescript-package-projection
-# Semantic fingerprint: sha256:467bfb4a75d4f8ac21b6c3a623362f1ec8c7f974b9f11a87f86cfc838408ae10
+# Semantic fingerprint: sha256:95381df02a78d0cec2e092ec731bc6e403601754d9e15c051d16431cb568d5ab
 # Regenerate: devenv tasks run genie:run
 
 load("//buck2:materialization.bzl", "export_materialization_inputs", "package_view")
@@ -193,6 +193,7 @@ export_materialization_inputs([
     "src/core/config.ts",
     "src/core/config.unit.test.ts",
     "src/core/git-memory.integration.test.ts",
+    "src/core/git-reflog.integration.test.ts",
     "src/core/git-streaming-parsers.integration.test.ts",
     "src/core/git-timeout.integration.test.ts",
     "src/core/git.ts",
@@ -519,6 +520,7 @@ package_view(
         "src/core/config.ts": "src/core/config.ts",
         "src/core/config.unit.test.ts": "src/core/config.unit.test.ts",
         "src/core/git-memory.integration.test.ts": "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts": "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts": "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts": "src/core/git-timeout.integration.test.ts",
         "src/core/git.ts": "src/core/git.ts",
@@ -847,6 +849,7 @@ package_view(
         "src/core/config.ts": "src/core/config.ts",
         "src/core/config.unit.test.ts": "src/core/config.unit.test.ts",
         "src/core/git-memory.integration.test.ts": "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts": "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts": "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts": "src/core/git-timeout.integration.test.ts",
         "src/core/git.ts": "src/core/git.ts",
@@ -1170,6 +1173,7 @@ package_view(
         "src/core/config.ts": "src/core/config.ts",
         "src/core/config.unit.test.ts": "src/core/config.unit.test.ts",
         "src/core/git-memory.integration.test.ts": "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts": "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts": "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts": "src/core/git-timeout.integration.test.ts",
         "src/core/git.ts": "src/core/git.ts",
@@ -1385,6 +1389,7 @@ vitest_test(
         "src/cli/store.integration.test.ts",
         "src/cli/sync.integration.test.ts",
         "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts",
         "src/core/nix-lock/mod.integration.test.ts",
@@ -1433,6 +1438,7 @@ vitest_collect(
         "src/cli/store.integration.test.ts",
         "src/cli/sync.integration.test.ts",
         "src/core/git-memory.integration.test.ts",
+        "src/core/git-reflog.integration.test.ts",
         "src/core/git-streaming-parsers.integration.test.ts",
         "src/core/git-timeout.integration.test.ts",
         "src/core/nix-lock/mod.integration.test.ts",
diff --git a/packages/@overeng/megarepo/BUCK.genie.ts b/packages/@overeng/megarepo/BUCK.genie.ts
index 6ebab8acff..a1c711b777 100644
--- a/packages/@overeng/megarepo/BUCK.genie.ts
+++ b/packages/@overeng/megarepo/BUCK.genie.ts
@@ -76,6 +76,7 @@ export const buck2TypeScriptAdmission = {
         'src/cli/store.integration.test.ts',
         'src/cli/sync.integration.test.ts',
         'src/core/git-memory.integration.test.ts',
+        'src/core/git-reflog.integration.test.ts',
         'src/core/git-streaming-parsers.integration.test.ts',
         'src/core/git-timeout.integration.test.ts',
         'src/core/nix-lock/mod.integration.test.ts',
diff --git a/packages/@overeng/megarepo/docs/spec.md b/packages/@overeng/megarepo/docs/spec.md
index 8a7b61d59d..7c7a72979e 100644
--- a/packages/@overeng/megarepo/docs/spec.md
+++ b/packages/@overeng/megarepo/docs/spec.md
@@ -37,6 +37,10 @@ Global repository cache at `~/.megarepo/` (configurable via `MEGAREPO_STORE`).
 
 The store uses **bare repos with worktrees per ref**:
 
+New bare stores set local `core.logAllRefUpdates=true` so branch updates leave
+reflogs for last-touch and recovery evidence. Fetching an existing store enables
+this setting before updating refs, preserving an existing `always` value.
+
 ```
 ~/.megarepo/
   github.com/
diff --git a/packages/@overeng/megarepo/src/core/git-reflog.integration.test.ts b/packages/@overeng/megarepo/src/core/git-reflog.integration.test.ts
new file mode 100644
index 0000000000..d4d68822aa
--- /dev/null
+++ b/packages/@overeng/megarepo/src/core/git-reflog.integration.test.ts
@@ -0,0 +1,93 @@
+import { NodeServices } from '@effect/platform-node'
+import { describe, it } from '@effect/vitest'
+import { Effect } from 'effect'
+import * as FileSystem from 'effect/FileSystem'
+import { expect } from 'vitest'
+
+import * as Git from './git.ts'
+
+process.env.GIT_CONFIG_GLOBAL = '/dev/null'
+process.env.GIT_CONFIG_SYSTEM = '/dev/null'
+
+const makeFixture = Effect.gen(function* () {
+  const fs = yield* FileSystem.FileSystem
+  const root = yield* fs.makeTempDirectoryScoped()
+  const source = `${root}/source`
+  const bare = `${root}/store.git`
+  yield* fs.makeDirectory(source)
+  yield* Git.runCommand({ cwd: source, args: ['init', '-b', 'main'] })
+  yield* Git.runCommand({
+    cwd: source,
+    args: [
+      '-c',
+      'user.name=Test User',
+      '-c',
+      'user.email=test@example.com',
+      '-c',
+      'commit.gpgsign=false',
+      'commit',
+      '--allow-empty',
+      '-m',
+      'initial',
+    ],
+  })
+  yield* Git.cloneBare({ url: source, targetPath: bare })
+  return { source, bare }
+})
+
+const readLogging = (repoPath: string) =>
+  Git.runCommand({
+    cwd: repoPath,
+    args: ['config', '--local', '--get', 'core.logAllRefUpdates'],
+  })
+
+const expectFetchedReflog = (repoPath: string) =>
+  Effect.gen(function* () {
+    const commit = yield* Git.runCommand({ cwd: repoPath, args: ['rev-parse', 'main'] })
+    const reflog = yield* Git.runCommand({
+      cwd: repoPath,
+      args: ['reflog', 'show', '--format=%H', 'refs/remotes/origin/main'],
+    })
+    expect(reflog.split('\n')).toContain(commit)
+  })
+
+describe('bare store reflogs', () => {
+  it.effect('enables reflogs on clone and records a later branch update', () =>
+    Effect.gen(function* () {
+      const { bare } = yield* makeFixture
+      expect(yield* readLogging(bare)).toBe('true')
+      yield* Git.fetchBare({ repoPath: bare })
+      yield* expectFetchedReflog(bare)
+    }).pipe(Effect.provide(NodeServices.layer), Effect.scoped),
+  )
+
+  it.effect('enables missing local reflog configuration before fetching existing stores', () =>
+    Effect.gen(function* () {
+      const { bare } = yield* makeFixture
+      yield* Git.runCommand({
+        cwd: bare,
+        args: ['config', '--local', '--unset-all', 'core.logAllRefUpdates'],
+      })
+      yield* Git.fetchBare({ repoPath: bare })
+      expect(yield* readLogging(bare)).toBe('true')
+      yield* expectFetchedReflog(bare)
+    }).pipe(Effect.provide(NodeServices.layer), Effect.scoped),
+  )
+
+  for (const value of ['false', 'always', 'ALWAYS']) {
+    it.effect(
+      `fetch ${value === 'false' ? 'enables disabled reflogs' : `preserves ${value}`}`,
+      () =>
+        Effect.gen(function* () {
+          const { bare } = yield* makeFixture
+          yield* Git.runCommand({
+            cwd: bare,
+            args: ['config', '--local', 'core.logAllRefUpdates', value],
+          })
+          yield* Git.fetchBare({ repoPath: bare })
+          expect(yield* readLogging(bare)).toBe(value === 'false' ? 'true' : value)
+          yield* expectFetchedReflog(bare)
+        }).pipe(Effect.provide(NodeServices.layer), Effect.scoped),
+    )
+  }
+})
diff --git a/packages/@overeng/megarepo/src/core/git.ts b/packages/@overeng/megarepo/src/core/git.ts
index 8bb6195661..56792a425e 100644
--- a/packages/@overeng/megarepo/src/core/git.ts
+++ b/packages/@overeng/megarepo/src/core/git.ts
@@ -891,6 +891,28 @@ export const repairBareOriginFetchRefspec = ({ repoPath }: { repoPath: string })
     }),
   )
 
+/** Enable store reflogs without weakening an existing `always` policy. Caller holds the writer lock. */
+export const ensureBareRefLogging = Effect.fn('git/ensure-bare-ref-logging')(function* ({
+  repoPath,
+}: {
+  repoPath: string
+}) {
+  const value = yield* runGitCommand({
+    args: ['config', '--local', '--get', 'core.logAllRefUpdates'],
+    cwd: repoPath,
+  }).pipe(
+    Effect.catchTag('GitCommandError', (error) =>
+      error.exitCode === 1 && error.stderr === '' ? Effect.succeed('') : Effect.fail(error),
+    ),
+  )
+  const normalized = value.toLowerCase()
+  if (normalized === 'true' || normalized === 'always') return
+  yield* runGitCommand({
+    args: ['config', '--local', 'core.logAllRefUpdates', 'true'],
+    cwd: repoPath,
+  })
+})
+
 /**
  * Clone a repository as a bare repo.
  * Configures fetch refspec so remote tracking refs are created on fetch.
@@ -929,6 +951,10 @@ export const cloneBare = (args: { url: string; targetPath: string }) => {
       args: ['config', 'remote.origin.fetch', bareOriginFetchRefspec],
       cwd: args.targetPath,
     })
+    yield* runGitCommand({
+      args: ['config', '--local', 'core.logAllRefUpdates', 'true'],
+      cwd: args.targetPath,
+    })
     return exists === false
   }).pipe(
     withGitWriterLock({ path: args.targetPath, create: true }),
@@ -959,6 +985,7 @@ export const fetchBare = (args: {
   refs?: ReadonlyArray<string>
 }) =>
   Effect.gen(function* () {
+    yield* ensureBareRefLogging({ repoPath: args.repoPath })
     const remote = args.remote ?? 'origin'
     yield* runGitCommandWithRetry({
       args: ['fetch', '--no-tags', '--prune', remote, bareOriginFetchRefspec],
diff --git a/packages/@overeng/tui-stories/BUCK b/packages/@overeng/tui-stories/BUCK
index f15e028d26..21229aa146 100644
--- a/packages/@overeng/tui-stories/BUCK
+++ b/packages/@overeng/tui-stories/BUCK
@@ -7,7 +7,7 @@ load("//buck2/products:defs.bzl", "javascript_product")
 # Projection source: packages/@overeng/tui-stories/BUCK.genie.ts
 # Projection schema version: 13
 # Projection generator: effect-utils/genie/buck2-typescript-package-projection
-# Semantic fingerprint: sha256:b93d0006b8d5a54a23a32e8c4de47701ff523f71c088bc9b0e0552f48e8f04c7
+# Semantic fingerprint: sha256:ce22cb54526b18bc11014f2c33324601fcee76b158c2d84c92e5d79f8fbe9bbb
 # Regenerate: devenv tasks run genie:run
 
 load("//buck2:materialization.bzl", "export_materialization_inputs", "package_view")
@@ -315,6 +315,7 @@ package_view(
         "node_modules/@overeng/megarepo/src/core/config.ts": "//packages/@overeng/megarepo:src/core/config.ts",
         "node_modules/@overeng/megarepo/src/core/config.unit.test.ts": "//packages/@overeng/megarepo:src/core/config.unit.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-memory.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-memory.integration.test.ts",
+        "node_modules/@overeng/megarepo/src/core/git-reflog.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-reflog.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-streaming-parsers.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-streaming-parsers.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-timeout.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-timeout.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git.ts": "//packages/@overeng/megarepo:src/core/git.ts",
@@ -716,6 +717,7 @@ package_view(
         "node_modules/@overeng/megarepo/src/core/config.ts": "//packages/@overeng/megarepo:src/core/config.ts",
         "node_modules/@overeng/megarepo/src/core/config.unit.test.ts": "//packages/@overeng/megarepo:src/core/config.unit.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-memory.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-memory.integration.test.ts",
+        "node_modules/@overeng/megarepo/src/core/git-reflog.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-reflog.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-streaming-parsers.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-streaming-parsers.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-timeout.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-timeout.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git.ts": "//packages/@overeng/megarepo:src/core/git.ts",
@@ -1117,6 +1119,7 @@ package_view(
         "node_modules/@overeng/megarepo/src/core/config.ts": "//packages/@overeng/megarepo:src/core/config.ts",
         "node_modules/@overeng/megarepo/src/core/config.unit.test.ts": "//packages/@overeng/megarepo:src/core/config.unit.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-memory.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-memory.integration.test.ts",
+        "node_modules/@overeng/megarepo/src/core/git-reflog.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-reflog.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-streaming-parsers.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-streaming-parsers.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git-timeout.integration.test.ts": "//packages/@overeng/megarepo:src/core/git-timeout.integration.test.ts",
         "node_modules/@overeng/megarepo/src/core/git.ts": "//packages/@overeng/megarepo:src/core/git.ts",