$ git clone -n https://src.fedoraproject.org/rpms/llvm-libunwind.git /var/lib/mock/f38-build-719852-97310/root/chroot_tmpdir/scmroot/llvm-libunwind
Cloning into '/var/lib/mock/f38-build-719852-97310/root/chroot_tmpdir/scmroot/llvm-libunwind'...
$ git fetch origin 62e183ad7f3e5b8d47a2316320b7601b9e0fda28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/llvm-libunwind
 * [new ref]         62e183ad7f3e5b8d47a2316320b7601b9e0fda28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 62e183a Update to LLVM 16.0.4