$ git clone -n https://src.fedoraproject.org/rpms/fatresize.git /var/lib/mock/f45-build-8709-394/root/chroot_tmpdir/scmroot/fatresize
Cloning into '/var/lib/mock/f45-build-8709-394/root/chroot_tmpdir/scmroot/fatresize'...
$ git fetch origin 0469b9fb8d27318f9538d17ef7820b425fe5a63c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fatresize
 * [new ref]         0469b9fb8d27318f9538d17ef7820b425fe5a63c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0469b9f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild