$ git clone -n https://gitee.com/renping000/jansson.git /var/lib/mock/dist-an23-build-191669-60794/root/chroot_tmpdir/scmroot/jansson
Cloning into '/var/lib/mock/dist-an23-build-191669-60794/root/chroot_tmpdir/scmroot/jansson'...
$ git fetch origin 950b692576b3d917b25249738c0ce9adeb4f0320:KOJI_FETCH_HEAD
From https://gitee.com/renping000/jansson
 * [new ref]         950b692576b3d917b25249738c0ce9adeb4f0320 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 950b692 optimise spec file