$ git clone -n https://src.fedoraproject.org/rpms/cross-binutils.git /var/lib/mock/f42-build-side-1-3501710-45976/root/chroot_tmpdir/scmroot/cross-binutils
Cloning into '/var/lib/mock/f42-build-side-1-3501710-45976/root/chroot_tmpdir/scmroot/cross-binutils'...
$ git fetch origin 6564af9375c9b604782e38ed4e27a5c31d6191f9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/cross-binutils
 * [new ref]         6564af9375c9b604782e38ed4e27a5c31d6191f9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6564af9 Update to 2.44, drop NIOS2 support