$ git clone -n http://fedora.riscv.rocks:3000/rpms/kernel.git /var/lib/mock/f42-spacemit-55-24/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/f42-spacemit-55-24/root/chroot_tmpdir/scmroot/kernel'...
$ git fetch origin ce5c2370ffa4be99dd66900883e1ad3ebdd95a41:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/kernel
 * [new ref]             ce5c2370ffa4be99dd66900883e1ad3ebdd95a41 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
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Updating files: 100% (1307/1307), done.
HEAD is now at ce5c2370f Update to 6.15.3