$ git clone -n https://src.fedoraproject.org/rpms/erlang-setup.git /var/lib/mock/f40-build-1777695-24803/root/chroot_tmpdir/scmroot/erlang-setup
Cloning into '/var/lib/mock/f40-build-1777695-24803/root/chroot_tmpdir/scmroot/erlang-setup'...
$ git fetch origin ba6ac3c1898b0a5807772330e86115506319c319:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-setup
 * [new ref]         ba6ac3c1898b0a5807772330e86115506319c319 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ba6ac3c erlang-setup ver. 2.2.0