$ git clone -n https://src.fedoraproject.org/rpms/mingw-tk.git /var/lib/mock/f40-build-2011433-45709/root/chroot_tmpdir/scmroot/mingw-tk
Cloning into '/var/lib/mock/f40-build-2011433-45709/root/chroot_tmpdir/scmroot/mingw-tk'...
$ git fetch origin 922a4815ccb307c7d2a7123ba1f54e0e40fc726a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-tk
 * [new ref]         922a4815ccb307c7d2a7123ba1f54e0e40fc726a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 922a481 Update to 8.6.13