$ git clone -n https://src.fedoraproject.org/rpms/lxrandr.git /var/lib/mock/f42-build-side-1-3500298-45970/root/chroot_tmpdir/scmroot/lxrandr
Cloning into '/var/lib/mock/f42-build-side-1-3500298-45970/root/chroot_tmpdir/scmroot/lxrandr'...
$ git fetch origin 1f3760b56112dd03ab3a5dc15de54b39978c3067:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lxrandr
 * [new ref]         1f3760b56112dd03ab3a5dc15de54b39978c3067 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f3760b 0.3.3