$ git clone -n https://gitee.com/mgb01105731/junit.git /var/lib/mock/dist-an23-build-270637-64121/root/chroot_tmpdir/scmroot/junit
Cloning into '/var/lib/mock/dist-an23-build-270637-64121/root/chroot_tmpdir/scmroot/junit'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/junit
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1cdcaa6 init upstream from version 4.12