$ git clone -n https://src.fedoraproject.org/rpms/mingw-drmingw.git /var/lib/mock/f45-build-18415-515/root/chroot_tmpdir/scmroot/mingw-drmingw
Cloning into '/var/lib/mock/f45-build-18415-515/root/chroot_tmpdir/scmroot/mingw-drmingw'...
$ git fetch origin 5bcd9ec84afcdf4a52b67e5e3cf2aade589d2490:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-drmingw
 * [new ref]         5bcd9ec84afcdf4a52b67e5e3cf2aade589d2490 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bcd9ec Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild