$ git clone -n https://gitee.com/wenyuzifang/gi-docgen.git /var/lib/mock/dist-an23-build-466348-73955/root/chroot_tmpdir/scmroot/gi-docgen
Cloning into '/var/lib/mock/dist-an23-build-466348-73955/root/chroot_tmpdir/scmroot/gi-docgen'...
$ git fetch origin 124ba5d0bcc340f0b37a3cd65c7f27c3f90d87f6:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/gi-docgen
 * [new ref]         124ba5d0bcc340f0b37a3cd65c7f27c3f90d87f6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 124ba5d Update code from upstream