$ git clone -n http://fedora.riscv.rocks:3000/rpms/mock-core-configs.git /var/lib/mock/f40-build-807857-145320/root/chroot_tmpdir/scmroot/mock-core-configs
Cloning into '/var/lib/mock/f40-build-807857-145320/root/chroot_tmpdir/scmroot/mock-core-configs'...
$ git fetch origin 928890a514c09a66a0972d0c28b4ac0b58b855f0:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/mock-core-configs
 * [new ref]         928890a514c09a66a0972d0c28b4ac0b58b855f0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 928890a Apply the patch