$ git clone -n https://gitee.com/opencloudos-stream/libtommath.git /var/lib/mock/dist-ocs23-build-124761-8678/root/chroot_tmpdir/scmroot/libtommath
Cloning into '/var/lib/mock/dist-ocs23-build-124761-8678/root/chroot_tmpdir/scmroot/libtommath'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/libtommath
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8cde11 !1 【自动升级】libtommath 1.2.1 Merge pull request !1 from ocs-bot/master