diff --git a/Makefile b/Makefile
index 4c0646df2..b5067db52 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-include /etc/os-release
+#! /usr/bin/make -f
 
 SRCDIR ?= .
 COMMIT = $(shell (cd "$(SRCDIR)" && git rev-parse HEAD))
@@ -40,34 +40,23 @@ help:
 
 RPM_SPECFILE=rpmbuild/SPECS/fido-device-onboard-rs-$(COMMIT).spec
 RPM_TARBALL=rpmbuild/SOURCES/fido-device-onboard-rs-$(COMMIT).tar.gz
-VENDOR_TARBALL=rpmbuild/SOURCES/fido-device-onboard-rs-$(COMMIT)-vendor-patched.tar.xz
 
 $(RPM_SPECFILE):
 	mkdir -p $(CURDIR)/rpmbuild/SPECS
 	sed -e "s/^Version:.*/Version: $(COMMIT)/;" fido-device-onboard.spec > $(RPM_SPECFILE)
-	if [ "$(ID)" = "fedora" ] && [ $(VARIANT_ID) != "eln" ]; then \
-		sed -i "/Source1/d ; /^# See make-vendored-tarfile.sh in upstream repo/d ;" $(RPM_SPECFILE); \
-	fi
 
 $(RPM_TARBALL):
 	mkdir -p $(CURDIR)/rpmbuild/SOURCES
-	cp ./patches/0001-Revert-chore-use-git-fork-for-aws-nitro-enclaves-cos.patch rpmbuild/SOURCES/;
 	git archive --prefix=fido-device-onboard-rs-$(COMMIT)/ --format=tar.gz HEAD > $(RPM_TARBALL)
 
-$(VENDOR_TARBALL):
-	[ "$(ID)" = "fedora" ] && [ $(VARIANT_ID) != "eln" ] || ( \
-	mkdir -p $(CURDIR)/rpmbuild/SOURCES ; \
-	./make-vendored-tarfile.sh $(COMMIT) ; \
-	mv fido-device-onboard-rs-$(COMMIT)-vendor-patched.tar.xz rpmbuild/SOURCES ;)
-
 .PHONY: srpm
-srpm: $(RPM_SPECFILE) $(RPM_TARBALL) $(VENDOR_TARBALL)
+srpm: $(RPM_SPECFILE) $(RPM_TARBALL)
 	rpmbuild -bs \
 		--define "_topdir $(CURDIR)/rpmbuild" \
 		$(RPM_SPECFILE)
 
 .PHONY: rpm
-rpm: $(RPM_SPECFILE) $(RPM_TARBALL) $(VENDOR_TARBALL)
+rpm: $(RPM_SPECFILE) $(RPM_TARBALL)
 	sudo dnf builddep -y fido-device-onboard
 	rpmbuild -bb \
 		--define "_topdir $(CURDIR)/rpmbuild" \
diff --git a/fido-device-onboard.spec b/fido-device-onboard.spec
index 20953ed89..541900798 100644
--- a/fido-device-onboard.spec
+++ b/fido-device-onboard.spec
@@ -10,9 +10,6 @@ License:        BSD-3-Clause
 
 URL:            https://github.com/fdo-rs/fido-device-onboard-rs
 Source0:        %{url}/archive/v%{version}/%{name}-rs-%{version}.tar.gz
-# See make-vendored-tarfile.sh in upstream repo
-Source1:        %{name}-rs-%{version}-vendor-patched.tar.xz
-Patch1:         0001-Revert-chore-use-git-fork-for-aws-nitro-enclaves-cos.patch
 
 # Because nobody cares
 ExcludeArch: %{ix86}
@@ -36,24 +33,24 @@ BuildRequires:  tpm2-tss-devel
 %{summary}.
 
 %prep
+%autosetup -p1 -n %{name}-rs-%{version}
 
 %if 0%{?rhel}
-%autosetup -p1 -a1 -n %{name}-rs-%{version}
-rm -f Cargo.lock
 %if 0%{?rhel} >= 10
 %cargo_prep -v vendor
 %else
-%cargo_prep -V 1
+%cargo_prep -V 0
 %endif
 %endif
 
 %if 0%{?fedora}
-%autosetup -p1 -n %{name}-rs-%{version}
 %cargo_prep
 %generate_buildrequires
 %cargo_generate_buildrequires -a
 %endif
 
+rm -f .cargo/cargo.toml
+
 %build
 %cargo_build \
 -F openssl-kdf/deny_custom
diff --git a/make-vendored-tarfile.sh b/make-vendored-tarfile.sh
deleted file mode 100755
index 745a2bbc3..000000000
--- a/make-vendored-tarfile.sh
+++ /dev/null
@@ -1,27 +0,0 @@
-#! /bin/bash
-
-set -x
-VER=${1:-$(git rev-parse HEAD)}
-shift
-PLATFORMS=$*
-
-[ -n "$PLATFORMS" ] || PLATFORMS=$(echo {x86_64,aarch64,powerpc64le,s390x}-unknown-linux-gnu)
-
-for PLATFORM in $PLATFORMS; do
-  ARGS+="--platform ${PLATFORM} "
-done
-
-# Clean vendor dir or the filterer will refuse to do the job
-rm -rf vendor
-
-# We need v0.5.7 because of RHEL rust version
-cargo install --quiet cargo-vendor-filterer@0.5.7
-
-# Filter the vendor files for the given platforms
-cargo vendor-filterer ${ARGS}
-
-# Patch the official crate so the build works.
-git apply patches/0001-fix-aws-nitro-enclaves-cose.patch
-tar cJf "fido-device-onboard-rs-${VER}-vendor-patched.tar.xz" vendor/
-# Remove previous patch and leave the official crate as it was.
-git apply -R patches/0001-fix-aws-nitro-enclaves-cose.patch