$ git clone -n https://src.fedoraproject.org/rpms/mingw-crossreport.git /var/lib/mock/f45-build-18399-515/root/chroot_tmpdir/scmroot/mingw-crossreport
Cloning into '/var/lib/mock/f45-build-18399-515/root/chroot_tmpdir/scmroot/mingw-crossreport'...
$ git fetch origin 55a3b68d76660ccedd87d0f4aa6b54a20045cf10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-crossreport
 * [new ref]         55a3b68d76660ccedd87d0f4aa6b54a20045cf10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 55a3b68 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild