$ git clone -n https://gitee.com/fundawang/libgit2.git /var/lib/mock/dist-an23-build-296833-65797/root/chroot_tmpdir/scmroot/libgit2
Cloning into '/var/lib/mock/dist-an23-build-296833-65797/root/chroot_tmpdir/scmroot/libgit2'...
$ git fetch origin 33050c494ff406865d76f17eaf5f6af948762329:KOJI_FETCH_HEAD
From https://gitee.com/fundawang/libgit2
 * [new ref]         33050c494ff406865d76f17eaf5f6af948762329 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33050c4 1.7.1