$ git clone -n https://gitee.com/mgb01105731/libnbd_2.git /var/lib/mock/dist-an23.2-build-418913-72880/root/chroot_tmpdir/scmroot/libnbd_2
Cloning into '/var/lib/mock/dist-an23.2-build-418913-72880/root/chroot_tmpdir/scmroot/libnbd_2'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libnbd_2
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fcfc8cb Refer to CentOS Stream libnbd-1.20.3-1(tdawson@redhat.com)