diff --git a/crates/uv-client/src/registry_client.rs b/crates/uv-client/src/registry_client.rs
index 43fdabb7c..e846ab640 100644
--- a/crates/uv-client/src/registry_client.rs
+++ b/crates/uv-client/src/registry_client.rs
@@ -704,10 +704,7 @@ impl RegistryClient {
     pub async fn fetch_simple_index(
         &self,
         index_url: &IndexUrl,
-        download_concurrency: &Semaphore,
     ) -> Result<SimpleIndexMetadata, Error> {
-        let _permit = download_concurrency.acquire().await;
-
         // Format the URL for PyPI.
         let mut url = index_url.url().clone();
         url.path_segments_mut()
@@ -1309,10 +1306,15 @@ pub struct VersionSourceDist {
 #[rkyv(derive(Debug))]
 pub struct SimpleIndexMetadata {
     /// The list of project names available in the index.
-    pub projects: Vec<PackageName>,
+    projects: Vec<PackageName>,
 }
 
 impl SimpleIndexMetadata {
+    /// Iterate over the projects in the index.
+    pub fn iter(&self) -> impl Iterator<Item = &PackageName> {
+        self.projects.iter()
+    }
+
     /// Create a [`SimpleIndexMetadata`] from a [`PypiSimpleIndex`].
     fn from_pypi_index(index: PypiSimpleIndex) -> Self {
         Self {
diff --git a/crates/uv-dev/src/list_packages.rs b/crates/uv-dev/src/list_packages.rs
index d5cfc14f7..0641bf617 100644
--- a/crates/uv-dev/src/list_packages.rs
+++ b/crates/uv-dev/src/list_packages.rs
@@ -1,7 +1,6 @@
 use anstream::println;
 use anyhow::Result;
 use clap::Parser;
-use tokio::sync::Semaphore;
 
 use uv_cache::{Cache, CacheArgs};
 use uv_client::{BaseClientBuilder, RegistryClientBuilder};
@@ -28,10 +27,9 @@ pub(crate) async fn list_packages(
     .build();
 
     let index_url = IndexUrl::parse(&args.url, None)?;
-    let concurrency = Semaphore::new(Semaphore::MAX_PERMITS);
-    let index = client.fetch_simple_index(&index_url, &concurrency).await?;
+    let index = client.fetch_simple_index(&index_url).await?;
 
-    for package_name in &index.projects {
+    for package_name in index.iter() {
         println!("{}", package_name);
     }
 
diff --git a/crates/uv-distribution/src/source/mod.rs b/crates/uv-distribution/src/source/mod.rs
index 93b68226c..769919585 100644
--- a/crates/uv-distribution/src/source/mod.rs
+++ b/crates/uv-distribution/src/source/mod.rs
@@ -1536,8 +1536,6 @@ impl<'a, T: BuildContext> SourceDistributionBuilder<'a, T> {
             return Err(Error::HashesNotSupportedGit(source.to_string()));
         }
 
-        // STOPSHIP(charlie): Here, we can fetch the pre-built wheel.
-
         // Fetch the Git repository.
         let fetch = self
             .build_context
diff --git a/hash_test.py b/hash_test.py
deleted file mode 100644
index 9f8288aba..000000000
--- a/hash_test.py
+++ /dev/null
@@ -1,50 +0,0 @@
-from hashlib import blake2b
-from os import fspath
-from typing import Optional, Union
-
-Pathish = Union[str, bytes, "os.PathLike[str]", "os.PathLike[bytes]"]
-
-def git_cache_digest(repository: str, precise: str, subdirectory: Optional[Pathish] = None) -> str:
-    """
-    Reproduces the Rust digest() exactly:
-
-    - blake2b with 32-byte (256-bit) digest
-    - bytes fed in this order:
-        repository + "/" + precise [+ "?subdirectory=" + subdirectory]
-    - subdirectory is included only if it is representable as UTF-8
-      (mirrors Rust Path::to_str() -> Option<&str>)
-    - hex output is lowercase
-    """
-    h = blake2b(digest_size=32)
-
-    # repository and precise are Rust &str equivalents: encode as UTF-8
-    h.update(repository.encode("utf-8"))
-    h.update(b"/")
-    h.update(precise.encode("utf-8"))
-
-    if subdirectory is not None:
-        # Normalize to either str or bytes using fspath (handles PathLike)
-        p = fspath(subdirectory)
-
-        # Try to get a UTF-8 string like Path::to_str()
-        if isinstance(p, bytes):
-            try:
-                p_str = p.decode("utf-8")
-            except UnicodeDecodeError:
-                p_str = None
-        else:
-            # Already a str
-            p_str = p
-
-        if p_str is not None:
-            h.update(b"?subdirectory=")
-            h.update(p_str.encode("utf-8"))
-
-    return h.hexdigest()
-
-digest = git_cache_digest(
-    repository="https://github.com/agronholm/anyio",
-    precise="64b753b19c9a49e3ae395cde457cf82d51f7e999",
-    subdirectory=None
-)
-print(digest)  # lowercase hex, identical to the Rust version