$ git clone -n https://gitee.com/zhoujiajia111/gdk-pixbuf2.git /var/lib/mock/dist-an23-build-466641-73981/root/chroot_tmpdir/scmroot/gdk-pixbuf2
Cloning into '/var/lib/mock/dist-an23-build-466641-73981/root/chroot_tmpdir/scmroot/gdk-pixbuf2'...
$ git fetch origin dbd87000e19ce7f49e315ae730ed3a80023ad186:KOJI_FETCH_HEAD
From https://gitee.com/zhoujiajia111/gdk-pixbuf2
 * [new ref]         dbd87000e19ce7f49e315ae730ed3a80023ad186 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbd8700 Update code from upstream