$ git clone -n https://gitee.com/mgb01105731/jsoncpp.git /var/lib/mock/dist-an23-build-337601-69712/root/chroot_tmpdir/scmroot/jsoncpp
Cloning into '/var/lib/mock/dist-an23-build-337601-69712/root/chroot_tmpdir/scmroot/jsoncpp'...
$ git fetch origin d27f835fb5ba4de3628ff085331ce7660c7ac310:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/jsoncpp
 * [new ref]         d27f835fb5ba4de3628ff085331ce7660c7ac310 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d27f835 rebuild