diff --git a/git-repository/src/lib.rs b/git-repository/src/lib.rs
index 46fd9fcd5ef..07da578a390 100644
--- a/git-repository/src/lib.rs
+++ b/git-repository/src/lib.rs
@@ -321,31 +321,25 @@ pub mod state {
     #[derive(Debug, PartialEq)]
     pub enum InProgress {
         /// A mailbox is being applied.
-        // TODO: test
         ApplyMailbox,
         /// A rebase is happening while a mailbox is being applied.
         // TODO: test
         ApplyMailboxRebase,
         /// A git bisect operation has not yet been concluded.
-        // TODO: test
         Bisect,
         /// A cherry pick operation.
         CherryPick,
         /// A cherry pick with multiple commits pending.
-        // TODO: test
         CherryPickSequence,
         /// A merge operation.
-        // TODO: test
         Merge,
         /// A rebase operation.
-        // TODO: test
         Rebase,
         /// An interactive rebase operation.
         RebaseInteractive,
         /// A revert operation.
         Revert,
         /// A revert operation with multiple commits pending.
-        // TODO: test
         RevertSequence,
     }
 }
diff --git a/git-repository/src/repository/state.rs b/git-repository/src/repository/state.rs
index 022f150f4da..41145cd4cfe 100644
--- a/git-repository/src/repository/state.rs
+++ b/git-repository/src/repository/state.rs
@@ -20,7 +20,7 @@ impl crate::Repository {
         } else if git_dir.join("rebase-merge").is_dir() {
             Some(state::InProgress::Rebase)
         } else if git_dir.join("CHERRY_PICK_HEAD").is_file() {
-            if git_dir.join("todo").is_file() {
+            if git_dir.join("sequencer/todo").is_file() {
                 Some(state::InProgress::CherryPickSequence)
             } else {
                 Some(state::InProgress::CherryPick)
@@ -30,7 +30,7 @@ impl crate::Repository {
         } else if git_dir.join("BISECT_LOG").is_file() {
             Some(state::InProgress::Bisect)
         } else if git_dir.join("REVERT_HEAD").is_file() {
-            if git_dir.join("todo").is_file() {
+            if git_dir.join("sequencer/todo").is_file() {
                 Some(state::InProgress::RevertSequence)
             } else {
                 Some(state::InProgress::Revert)
diff --git a/git-repository/tests/fixtures/generated-archives/make_am_repo.tar.xz b/git-repository/tests/fixtures/generated-archives/make_am_repo.tar.xz
new file mode 100644
index 00000000000..79078167099
Binary files /dev/null and b/git-repository/tests/fixtures/generated-archives/make_am_repo.tar.xz differ
diff --git a/git-repository/tests/fixtures/generated-archives/make_bisect_repo.tar.xz b/git-repository/tests/fixtures/generated-archives/make_bisect_repo.tar.xz
new file mode 100644
index 00000000000..d587e2fec91
Binary files /dev/null and b/git-repository/tests/fixtures/generated-archives/make_bisect_repo.tar.xz differ
diff --git a/git-repository/tests/fixtures/generated-archives/make_cherry_pick_sequence_repo.tar.xz b/git-repository/tests/fixtures/generated-archives/make_cherry_pick_sequence_repo.tar.xz
new file mode 100644
index 00000000000..5a912a9cdf9
Binary files /dev/null and b/git-repository/tests/fixtures/generated-archives/make_cherry_pick_sequence_repo.tar.xz differ
diff --git a/git-repository/tests/fixtures/generated-archives/make_merge_repo.tar.xz b/git-repository/tests/fixtures/generated-archives/make_merge_repo.tar.xz
new file mode 100644
index 00000000000..ec232d12d85
Binary files /dev/null and b/git-repository/tests/fixtures/generated-archives/make_merge_repo.tar.xz differ
diff --git a/git-repository/tests/fixtures/generated-archives/make_revert_sequence_repo.tar.xz b/git-repository/tests/fixtures/generated-archives/make_revert_sequence_repo.tar.xz
new file mode 100644
index 00000000000..5095081dae9
Binary files /dev/null and b/git-repository/tests/fixtures/generated-archives/make_revert_sequence_repo.tar.xz differ
diff --git a/git-repository/tests/fixtures/make_am_repo.sh b/git-repository/tests/fixtures/make_am_repo.sh
new file mode 100644
index 00000000000..3923e0e4fd0
--- /dev/null
+++ b/git-repository/tests/fixtures/make_am_repo.sh
@@ -0,0 +1,22 @@
+#!/bin/bash
+set -eu -o pipefail
+
+git init -q
+
+echo 1.main > 1
+git add 1
+git commit -m 1.main 1
+
+git checkout -b other-branch
+echo 1.other-branch > 1
+git commit -m 1.other-branch 1
+# Create an mbox formatted patch and save the path
+patch_path=$(git format-patch main)
+
+git checkout main
+# Create a conflict
+echo 1.main.update > 1
+git commit -m 1.main.update 1
+
+# This will fail due to the merge conflict and leave us in a 'apply mbox in progress' state
+git am 0001-1.other-branch.patch || true
diff --git a/git-repository/tests/fixtures/make_bisect_repo.sh b/git-repository/tests/fixtures/make_bisect_repo.sh
new file mode 100644
index 00000000000..0b890bab39e
--- /dev/null
+++ b/git-repository/tests/fixtures/make_bisect_repo.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+set -eu -o pipefail
+
+git init -q
+
+touch 1 2
+
+git add 1
+git commit -m 1 1
+
+git add 2
+git commit -m 2 2
+
+git bisect start
diff --git a/git-repository/tests/fixtures/make_cherry_pick_sequence_repo.sh b/git-repository/tests/fixtures/make_cherry_pick_sequence_repo.sh
new file mode 100644
index 00000000000..53f18a274ac
--- /dev/null
+++ b/git-repository/tests/fixtures/make_cherry_pick_sequence_repo.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+set -eu -o pipefail
+
+git init -q
+
+touch 1 2 3
+
+git add 1
+git commit -m 1 1
+
+git checkout -b other-branch
+echo 2.other-branch > 2
+git add 2
+git commit -m 2.other-branch 2
+git add 3
+git commit -m 3 3
+
+git checkout main
+echo 2.main > 2
+git add 2
+git commit -m 2.main 2
+
+# This should fail and leave us in a cherry-pick + sequencer state
+git cherry-pick other-branch~2..other-branch || true
diff --git a/git-repository/tests/fixtures/make_merge_repo.sh b/git-repository/tests/fixtures/make_merge_repo.sh
new file mode 100644
index 00000000000..9beda889138
--- /dev/null
+++ b/git-repository/tests/fixtures/make_merge_repo.sh
@@ -0,0 +1,19 @@
+#!/bin/bash
+set -eu -o pipefail
+
+git init -q
+
+echo 1.main > 1
+git add 1
+git commit -m 1.main 1
+
+git checkout -b other-branch
+echo 1.other-branch > 1
+git add 1
+git commit -m 1.other-branch 1
+
+git checkout main
+echo 1.main changed > 1
+git commit -m 1.main\ changed 1
+
+git merge other-branch || true
diff --git a/git-repository/tests/fixtures/make_revert_sequence_repo.sh b/git-repository/tests/fixtures/make_revert_sequence_repo.sh
new file mode 100644
index 00000000000..37f182deac7
--- /dev/null
+++ b/git-repository/tests/fixtures/make_revert_sequence_repo.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+set -eu -o pipefail
+
+git init -q
+
+echo 1.0 > 1
+git add 1
+git commit -m 1.0 1
+
+echo 1.1 > 1
+git commit -m 1.1 1
+
+echo 1.2 > 1
+git commit -m 1.2 1
+touch 2
+git add 2
+git commit -m 2 2
+
+# This should fail and leave us in a revert + sequencer state
+git revert --no-commit HEAD HEAD~2 || true
diff --git a/git-repository/tests/repository/state.rs b/git-repository/tests/repository/state.rs
index 0f85ba8767d..ee221d7c8d1 100644
--- a/git-repository/tests/repository/state.rs
+++ b/git-repository/tests/repository/state.rs
@@ -1,6 +1,31 @@
 use crate::{named_repo, Result};
 use git_repository as git;
 
+#[test]
+fn apply_mailbox() -> Result {
+    let repo = named_repo("make_am_repo.sh")?;
+
+    let head = repo.head()?;
+    let head_name = head.referent_name().expect("no detached head").shorten();
+    assert_eq!(head_name, "main");
+
+    assert_eq!(repo.in_progress_operation(), Some(git::state::InProgress::ApplyMailbox));
+    Ok(())
+}
+
+#[test]
+fn bisect() -> Result {
+    let repo = named_repo("make_bisect_repo.sh")?;
+
+    let head = repo.head()?;
+    let head_name = head.referent_name().expect("no detached head").shorten();
+    assert_eq!(head_name, "main");
+
+    assert_eq!(repo.in_progress_operation(), Some(git::state::InProgress::Bisect));
+
+    Ok(())
+}
+
 #[test]
 fn cherry_pick() -> Result {
     let repo = named_repo("make_cherry_pick_repo.sh")?;
@@ -13,6 +38,35 @@ fn cherry_pick() -> Result {
     Ok(())
 }
 
+#[test]
+fn cherry_pick_sequence() -> Result {
+    let repo = named_repo("make_cherry_pick_sequence_repo.sh")?;
+
+    let head = repo.head()?;
+    let head_name = head.referent_name().expect("no detached head").shorten();
+    assert_eq!(head_name, "main");
+
+    assert_eq!(
+        repo.in_progress_operation(),
+        Some(git::state::InProgress::CherryPickSequence)
+    );
+
+    Ok(())
+}
+
+#[test]
+fn merge() -> Result {
+    let repo = named_repo("make_merge_repo.sh")?;
+
+    let head = repo.head()?;
+    let head_name = head.referent_name().expect("no detached head").shorten();
+    assert_eq!(head_name, "main");
+
+    assert_eq!(repo.in_progress_operation(), Some(git::state::InProgress::Merge));
+
+    Ok(())
+}
+
 #[test]
 fn rebase_interactive() -> Result {
     let repo = named_repo("make_rebase_i_repo.sh")?;
@@ -39,3 +93,19 @@ fn revert() -> Result {
 
     Ok(())
 }
+
+#[test]
+fn revert_sequence() -> Result {
+    let repo = named_repo("make_revert_sequence_repo.sh")?;
+
+    let head = repo.head()?;
+    let head_name = head.referent_name().expect("no detached head").shorten();
+    assert_eq!(head_name, "main");
+
+    assert_eq!(
+        repo.in_progress_operation(),
+        Some(git::state::InProgress::RevertSequence)
+    );
+
+    Ok(())
+}