$ git clone -n https://gitee.com/zhaohang_mskdxl/ceph.git /var/lib/mock/dist-an23.3-build-417307-72868/root/chroot_tmpdir/scmroot/ceph
Cloning into '/var/lib/mock/dist-an23.3-build-417307-72868/root/chroot_tmpdir/scmroot/ceph'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/zhaohang_mskdxl/ceph
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8389849 update to ceph-18.2.1-4