$ git clone -n https://gitee.com/src-opencloudos-rpms/ipxe.git /var/lib/mock/dist-oc9-build-60379-16463/root/chroot_tmpdir/scmroot/ipxe
Cloning into '/var/lib/mock/dist-oc9-build-60379-16463/root/chroot_tmpdir/scmroot/ipxe'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/ipxe
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53ef4a4 import ipxe-20220210-4.tl4