$ git clone -n https://src.fedoraproject.org/rpms/plotdrop.git /var/lib/mock/f41-build-851575-166010/root/chroot_tmpdir/scmroot/plotdrop
Cloning into '/var/lib/mock/f41-build-851575-166010/root/chroot_tmpdir/scmroot/plotdrop'...
$ git fetch origin b1ed0f7d3264286d9d53c02bffebe470db77282c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plotdrop
 * [new ref]         b1ed0f7d3264286d9d53c02bffebe470db77282c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b1ed0f7 Fix int-conversion error