$ git clone -n https://src.fedoraproject.org/rpms/erlang-rpm-macros.git /var/lib/mock/f41-build-59020671-6570325/root/chroot_tmpdir/scmroot/erlang-rpm-macros
Cloning into '/var/lib/mock/f41-build-59020671-6570325/root/chroot_tmpdir/scmroot/erlang-rpm-macros'...
$ git fetch origin ae03e7fcdfa0cc7e65dc29b71d3a0b030f1e1159:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-rpm-macros
 * [new ref]         ae03e7fcdfa0cc7e65dc29b71d3a0b030f1e1159 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ae03e7f Missing requires