$ git clone -n https://gitee.com/ocs-upgrade/dwarves.git /var/lib/mock/dist-ocs23-build-284785-27555/root/chroot_tmpdir/scmroot/dwarves
Cloning into '/var/lib/mock/dist-ocs23-build-284785-27555/root/chroot_tmpdir/scmroot/dwarves'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/dwarves
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4379203 Upgrade to version 1.27