$ git clone -n https://gitee.com/wenyuzifang/gdk-pixbuf2.git /var/lib/mock/dist-an23-build-485158-74348/root/chroot_tmpdir/scmroot/gdk-pixbuf2
Cloning into '/var/lib/mock/dist-an23-build-485158-74348/root/chroot_tmpdir/scmroot/gdk-pixbuf2'...
$ git fetch origin 3a8df5be83fae2b867d0ad5224d8cac68996054c:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/gdk-pixbuf2
 * [new ref]         3a8df5be83fae2b867d0ad5224d8cac68996054c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3a8df5b Update code from upstream