$ git clone -n http://fedora.riscv.rocks:3000/rpms/kernel.git /var/lib/mock/f39-build-730215-102606/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/f39-build-730215-102606/root/chroot_tmpdir/scmroot/kernel'...
$ git fetch origin 638c73f5212e53cd4c303f31e9a275c7d9a437c3:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/kernel
 * [new ref]             638c73f5212e53cd4c303f31e9a275c7d9a437c3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 638c73f52 Switch again to ZBOOT EFI kernel (riscv64)