$ git clone -n https://gitee.com/ocs-upgrade/unifdef.git /var/lib/mock/dist-ocs23-base-build-317555-33438/root/chroot_tmpdir/scmroot/unifdef
Cloning into '/var/lib/mock/dist-ocs23-base-build-317555-33438/root/chroot_tmpdir/scmroot/unifdef'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/unifdef
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 73b9b04 Upgrade to version 2.12