$ git clone -n https://gitee.com/lizhao2025/libgit2.git /var/lib/mock/dist-an23-build-496573-74608/root/chroot_tmpdir/scmroot/libgit2
Cloning into '/var/lib/mock/dist-an23-build-496573-74608/root/chroot_tmpdir/scmroot/libgit2'...
$ git fetch origin 5c509e8731be74f5611ebedff30f190069f99e60:KOJI_FETCH_HEAD
From https://gitee.com/lizhao2025/libgit2
 * [new ref]         5c509e8731be74f5611ebedff30f190069f99e60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c509e8 Update code from upstream