$ git clone -n http://fedora.riscv.rocks:3000/rpms/rust.git /var/lib/mock/f40-build-807923-145376/root/chroot_tmpdir/scmroot/rust
Cloning into '/var/lib/mock/f40-build-807923-145376/root/chroot_tmpdir/scmroot/rust'...
$ git fetch origin 6d774e1b7af2e40e8a6aec0bf4fe815632b5158d:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/rust
 * [new ref]         6d774e1b7af2e40e8a6aec0bf4fe815632b5158d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6d774e1 Skip panic_abort_doc_tests on riscv64