diff --git a/.redbear-fork-verify/bootloader-1.0.0.files b/.redbear-fork-verify/bootloader-1.0.0.files
new file mode 100644
index 0000000000..08f563fc59
--- /dev/null
+++ b/.redbear-fork-verify/bootloader-1.0.0.files
@@ -0,0 +1,51 @@
+asm/aarch64/dummy.S
+asm/arm/start.s
+asm/x86-unknown-none/bootloader.asm
+asm/x86-unknown-none/cpuid.asm
+asm/x86-unknown-none/gdt.asm
+asm/x86-unknown-none/long_mode.asm
+asm/x86-unknown-none/memory_map.asm
+asm/x86-unknown-none/print.asm
+asm/x86-unknown-none/protected_mode.asm
+asm/x86-unknown-none/stage1.asm
+asm/x86-unknown-none/stage2.asm
+asm/x86-unknown-none/thunk.asm
+.cargo/config
+Cargo.toml
+.gitignore
+LICENSE
+linkers/x86-unknown-none.ld
+Makefile
+mk/aarch64-unknown-uefi.mk
+mk/x86_64-unknown-uefi.mk
+mk/x86-unknown-none.mk
+rust-toolchain.toml
+src/arch/aarch64/mod.rs
+src/arch/aarch64/paging.rs
+src/arch/mod.rs
+src/arch/x86_64/mod.rs
+src/arch/x86_64/paging.rs
+src/logger.rs
+src/main.rs
+src/os/bios/disk.rs
+src/os/bios/macros.rs
+src/os/bios/memory_map.rs
+src/os/bios/mod.rs
+src/os/bios/panic.rs
+src/os/bios/thunk.rs
+src/os/bios/vbe.rs
+src/os/bios/vga.rs
+src/os/mod.rs
+src/os/uefi/arch/aarch64/memory_map.rs
+src/os/uefi/arch/aarch64/mod.rs
+src/os/uefi/arch/aarch64/paging.rs
+src/os/uefi/arch/mod.rs
+src/os/uefi/arch/x86_64/memory_map.rs
+src/os/uefi/arch/x86_64/mod.rs
+src/os/uefi/arch/x86_64/paging.rs
+src/os/uefi/arch/x86_64/video_mode.rs
+src/os/uefi/disk.rs
+src/os/uefi/display.rs
+src/os/uefi/mod.rs
+targets/aarch64-unknown-uefi.json
+targets/x86-unknown-none.json
diff --git a/.redbear-fork-verify/bootloader-1.0.0.fingerprint b/.redbear-fork-verify/bootloader-1.0.0.fingerprint
new file mode 100644
index 0000000000..b7a7fb4ad9
--- /dev/null
+++ b/.redbear-fork-verify/bootloader-1.0.0.fingerprint
@@ -0,0 +1 @@
+c7eeb9f220170696268ebeee696ab2e8dcb61967
diff --git a/local/scripts/verify-fork-versions.sh b/local/scripts/verify-fork-versions.sh
index b79635b7ff..ecb7488fa4 100755
--- a/local/scripts/verify-fork-versions.sh
+++ b/local/scripts/verify-fork-versions.sh
@@ -113,6 +113,20 @@ for fork_dir in local/sources/*/; do
         continue
     fi
 
+    # Per-fork content fingerprint cache: store the last successfully-verified
+    # upstream commit + a hash of the file list. If the upstream commit hasn't
+    # changed since the last verify, reuse the cached file list instead of
+    # cloning + re-hashing from scratch. This makes the canonical preflight
+    # cheap on the common case where upstream didn't move.
+    fingerprint_dir="$ROOT/.redbear-fork-verify"
+    mkdir -p "$fingerprint_dir"
+    fingerprint="$fingerprint_dir/${fork_name}-${upstream_tag}.fingerprint"
+    if [ -f "$fingerprint" ] && [ "$(cat "$fingerprint" 2>/dev/null)" = "$upstream_hash" ]; then
+        upstream_files=$(cat "$fingerprint_dir/${fork_name}-${upstream_tag}.files" 2>/dev/null)
+    else
+        upstream_files=""
+    fi
+
     # Compare file lists: the local fork should have the same files as
     # upstream at $upstream_hash, plus any Red Bear patch files.
     cd "$fork_dir"
@@ -198,6 +212,11 @@ for fork_dir in local/sources/*/; do
     fi
 
     rm -rf "/tmp/verify-$fork_name"
+
+    # Cache successful verify result so subsequent preflight runs don't
+    # re-clone upstream. Stored under .redbear-fork-verify/<fork>-<tag>.
+    echo "$upstream_hash" > "$fingerprint" 2>/dev/null
+    echo "$upstream_files" > "$fingerprint_dir/${fork_name}-${upstream_tag}.files" 2>/dev/null
 done
 
 if [ "$violations" -gt 0 ]; then