$ git clone -n http://fedora.riscv.rocks:3000/rpms/kernel.git /var/lib/mock/f41-p550-867979-175660/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/f41-p550-867979-175660/root/chroot_tmpdir/scmroot/kernel'...
$ git fetch origin 421735bfbb8073acfa9b57536619c406aed48150:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/kernel
 * [new ref]             421735bfbb8073acfa9b57536619c406aed48150 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
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Updating files: 100% (222/222), done.
HEAD is now at 421735bfb Update to 6.6.74