$ git clone -n https://src.fedoraproject.org/rpms/mingw-python-build.git /var/lib/mock/f45-build-18649-525/root/chroot_tmpdir/scmroot/mingw-python-build
Cloning into '/var/lib/mock/f45-build-18649-525/root/chroot_tmpdir/scmroot/mingw-python-build'...
$ git fetch origin 63564c4455b7eef45b8138e480caa2437c3d685f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-python-build
 * [new ref]         63564c4455b7eef45b8138e480caa2437c3d685f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 63564c4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild