$ git clone -n http://fedora.riscv.rocks:3000/rpms/libcxxabi.git /var/lib/mock/f37-build-643285-72109/root/chroot_tmpdir/scmroot/libcxxabi
Cloning into '/var/lib/mock/f37-build-643285-72109/root/chroot_tmpdir/scmroot/libcxxabi'...
$ git reset --hard 513060da734fafb9e2019b0c3b73110de1c3c54b
HEAD is now at 513060d Bootstrap on riscv64