$ git clone -n https://src.fedoraproject.org/rpms/fflas-ffpack.git /var/lib/mock/f45-build-8937-397/root/chroot_tmpdir/scmroot/fflas-ffpack
Cloning into '/var/lib/mock/f45-build-8937-397/root/chroot_tmpdir/scmroot/fflas-ffpack'...
$ git fetch origin 5e17ca71f303b2943f088185a0c4127983b8a58e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fflas-ffpack
 * [new ref]         5e17ca71f303b2943f088185a0c4127983b8a58e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5e17ca7 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild