$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtconnectivity.git /var/lib/mock/f41-build-847168-163786/root/chroot_tmpdir/scmroot/qt5-qtconnectivity
Cloning into '/var/lib/mock/f41-build-847168-163786/root/chroot_tmpdir/scmroot/qt5-qtconnectivity'...
$ git fetch origin b2d66884840318d0081f85e1fd02102cc70d94e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtconnectivity
 * [new ref]         b2d66884840318d0081f85e1fd02102cc70d94e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2d6688 5.15.15