$ git clone -n https://github.com/fedora-riscv/llvm13.git /var/lib/mock/f38-build-side-42-init-devel-579142-26020/root/chroot_tmpdir/scmroot/llvm13
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-579142-26020/root/chroot_tmpdir/scmroot/llvm13'...
$ git fetch origin ed0c6847ded0a4a467a5f35ec145c7473d36a803:KOJI_FETCH_HEAD
fatal: unable to access 'https://github.com/fedora-riscv/llvm13.git/': HTTP/2 stream 1 was not closed cleanly before end of the underlying stream
$ git reset --hard ed0c6847ded0a4a467a5f35ec145c7473d36a803
HEAD is now at ed0c684 Add riscv64 support.