$ git clone -n https://gitee.com/opencloudos-stream/rust-libgit2-sys.git /var/lib/mock/dist-oc9-epol-build-97652-60081/root/chroot_tmpdir/scmroot/rust-libgit2-sys
Cloning into '/var/lib/mock/dist-oc9-epol-build-97652-60081/root/chroot_tmpdir/scmroot/rust-libgit2-sys'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/rust-libgit2-sys
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a888cb1 update