$ git clone -n https://gitee.com/wenyuzifang/re2.git /var/lib/mock/dist-an23-build-464288-73881/root/chroot_tmpdir/scmroot/re2
Cloning into '/var/lib/mock/dist-an23-build-464288-73881/root/chroot_tmpdir/scmroot/re2'...
$ git fetch origin 1674eef803e5fe296b7a72b675d064c4097d5d6f:KOJI_FETCH_HEAD
From https://gitee.com/wenyuzifang/re2
 * [new ref]         1674eef803e5fe296b7a72b675d064c4097d5d6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1674eef Update code from upstream