$ git clone -n https://gitee.com/wenyuzifang/libisoburn.git /var/lib/mock/dist-an23-build-480684-74252/root/chroot_tmpdir/scmroot/libisoburn
Cloning into '/var/lib/mock/dist-an23-build-480684-74252/root/chroot_tmpdir/scmroot/libisoburn'...
$ git fetch origin 996c8af3265e7d49e1296b50ce7454bf3e8aa93d:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libisoburn
 * [new ref]         996c8af3265e7d49e1296b50ce7454bf3e8aa93d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 996c8af Update code from upstream