$ git clone -n http://fedora.riscv.rocks:3000/rpms/kernel.git /var/lib/mock/f39-build-730064-102298/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/f39-build-730064-102298/root/chroot_tmpdir/scmroot/kernel'...
$ git fetch origin bccf0124d7e2a180c522cfbb31e6b2c9c0847b6c:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/kernel
 * [new ref]             bccf0124d7e2a180c522cfbb31e6b2c9c0847b6c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bccf0124d Disable CONFIG_CRYPTO_STATS