$ git clone -n https://gitee.com/src-opencloudos-rpms/emacs.git /var/lib/mock/dist-oc8-build-176105-79982/root/chroot_tmpdir/scmroot/emacs
Cloning into '/var/lib/mock/dist-oc8-build-176105-79982/root/chroot_tmpdir/scmroot/emacs'...
$ git fetch origin 5a052d1f3b7b2b4548ddac45354bba99b1301fad:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/emacs
 * [new ref]         5a052d1f3b7b2b4548ddac45354bba99b1301fad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a052d1 import emacs-26.1-15.tl3