$ git clone -n http://fedora.riscv.rocks:3000/rpms/kernel.git /var/lib/mock/f39-build-730011-102274/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/f39-build-730011-102274/root/chroot_tmpdir/scmroot/kernel'...
$ git fetch origin 76951f5392fc9ef8338168ebad400d4ca40addbe:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/kernel
 * [new ref]             76951f5392fc9ef8338168ebad400d4ca40addbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76951f539 Add riscv64 support