$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtserialbus.git /var/lib/mock/f45-build-34056-676/root/chroot_tmpdir/scmroot/qt5-qtserialbus
Cloning into '/var/lib/mock/f45-build-34056-676/root/chroot_tmpdir/scmroot/qt5-qtserialbus'...
$ git fetch origin 08aa872f44a31f4aa6408de1ed7c22864d28bb16:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtserialbus
 * [new ref]         08aa872f44a31f4aa6408de1ed7c22864d28bb16 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 08aa872 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild