$ git clone -n https://src.fedoraproject.org/rpms/qt5-qtdatavis3d.git /var/lib/mock/f39-build-2210689-52184/root/chroot_tmpdir/scmroot/qt5-qtdatavis3d
Cloning into '/var/lib/mock/f39-build-2210689-52184/root/chroot_tmpdir/scmroot/qt5-qtdatavis3d'...
$ git fetch origin 5b8b329f4821d7d8390b2342652e0e42987908dd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/qt5-qtdatavis3d
 * [new ref]         5b8b329f4821d7d8390b2342652e0e42987908dd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b8b329 5.15.12