$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtx11extras.git /var/lib/mock/f45-build-34081-677/root/chroot_tmpdir/scmroot/qt5-qtx11extras
Cloning into '/var/lib/mock/f45-build-34081-677/root/chroot_tmpdir/scmroot/qt5-qtx11extras'...
$ git fetch origin 1846cf73fd186b0a63e025f63205138ccfc46cd0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtx11extras
 * [new ref]         1846cf73fd186b0a63e025f63205138ccfc46cd0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1846cf7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild