$ git clone -n https://src.fedoraproject.org/rpms/qalculate-qt.git /var/lib/mock/f42-build-3343876-44994/root/chroot_tmpdir/scmroot/qalculate-qt
Cloning into '/var/lib/mock/f42-build-3343876-44994/root/chroot_tmpdir/scmroot/qalculate-qt'...
$ git fetch origin 0412d2d1dc13e0a29d7cb642871eaea44b7723d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qalculate-qt
 * [new ref]         0412d2d1dc13e0a29d7cb642871eaea44b7723d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0412d2d Update to 5.5.0 upstream release