$ git clone -n https://src.fedoraproject.org/rpms/mingw-qt5-qtbase.git /var/lib/mock/f45-build-18735-528/root/chroot_tmpdir/scmroot/mingw-qt5-qtbase
Cloning into '/var/lib/mock/f45-build-18735-528/root/chroot_tmpdir/scmroot/mingw-qt5-qtbase'...
$ git fetch origin cff11772c539b2311bb62c1613250ed180ef3f0a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-qt5-qtbase
 * [new ref]         cff11772c539b2311bb62c1613250ed180ef3f0a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cff1177 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild