$ git clone -n https://gitee.com/fundawang/mutter.git /var/lib/mock/dist-an23-build-284910-64769/root/chroot_tmpdir/scmroot/mutter
Cloning into '/var/lib/mock/dist-an23-build-284910-64769/root/chroot_tmpdir/scmroot/mutter'...
$ git fetch origin c6074eb8772a2f5113217a4a0eb37ed46a7a7ce2:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/mutter
 * [new ref]         c6074eb8772a2f5113217a4a0eb37ed46a7a7ce2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c6074eb 44.3