$ git clone -n https://src.fedoraproject.org/rpms/qt5-qt3d.git /var/lib/mock/f38-build-711806-94150/root/chroot_tmpdir/scmroot/qt5-qt3d
Cloning into '/var/lib/mock/f38-build-711806-94150/root/chroot_tmpdir/scmroot/qt5-qt3d'...
$ git fetch origin 4d16c1d69d813430e86303a7f128c338bb4fade5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qt3d
 * [new ref]         4d16c1d69d813430e86303a7f128c338bb4fade5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d16c1d 5.15.9