$ git clone -n https://gitee.com/src-opencloudos-rpms/emacs.git /var/lib/mock/dist-oc8-build-124572-74078/root/chroot_tmpdir/scmroot/emacs
Cloning into '/var/lib/mock/dist-oc8-build-124572-74078/root/chroot_tmpdir/scmroot/emacs'...
$ git fetch origin 74a7eda4310433c7212ee20c82446e5e78c09e20:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/emacs
 * [new ref]         74a7eda4310433c7212ee20c82446e5e78c09e20 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 74a7eda import emacs-26.1-13.tl3