$ git clone -n https://gitee.com/wenyuzifang/libisoburn.git /var/lib/mock/dist-an23-build-485883-74348/root/chroot_tmpdir/scmroot/libisoburn
Cloning into '/var/lib/mock/dist-an23-build-485883-74348/root/chroot_tmpdir/scmroot/libisoburn'...
$ git fetch origin 1980eb6b8d2b429c00f8fce9cc6113c648041872:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/libisoburn
 * [new ref]         1980eb6b8d2b429c00f8fce9cc6113c648041872 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1980eb6 Update code from upstream