$ git clone -n https://gitee.com/mgb01105731/golang-x-sync.git /var/lib/mock/dist-an23-epao-build-299312-65896/root/chroot_tmpdir/scmroot/golang-x-sync
Cloning into '/var/lib/mock/dist-an23-epao-build-299312-65896/root/chroot_tmpdir/scmroot/golang-x-sync'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/golang-x-sync
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7c7aba0 init upstream from version 0.1.0