$ git clone -n https://gitee.com/ocs-bot/mpdecimal.git /var/lib/mock/dist-ocs23-build-172426-10646/root/chroot_tmpdir/scmroot/mpdecimal
Cloning into '/var/lib/mock/dist-ocs23-build-172426-10646/root/chroot_tmpdir/scmroot/mpdecimal'...
$ git fetch origin HEAD:KOJI_FETCH_HEAD
From https://gitee.com/ocs-bot/mpdecimal
 * [new ref]         HEAD       -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2db535f Upgrade to version 4.0.0