$ git clone -n https://src.fedoraproject.org/rpms/mingw-qt5-qtbase.git /var/lib/mock/f38-build-728060-101009/root/chroot_tmpdir/scmroot/mingw-qt5-qtbase
Cloning into '/var/lib/mock/f38-build-728060-101009/root/chroot_tmpdir/scmroot/mingw-qt5-qtbase'...
$ git fetch origin 411b2207029295e43f923e0af844d5cfb19ace0e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-qt5-qtbase
 * [new ref]         411b2207029295e43f923e0af844d5cfb19ace0e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 411b220 Rebase patches