$ git clone -n https://src.fedoraproject.org/rpms/erlang.git /var/lib/mock/f41-build-884525-16596/root/chroot_tmpdir/scmroot/erlang
Cloning into '/var/lib/mock/f41-build-884525-16596/root/chroot_tmpdir/scmroot/erlang'...
$ git fetch origin 986d3f3ba728fffccf1f3df7f0679c68ea91952f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang
 * [new ref]         986d3f3ba728fffccf1f3df7f0679c68ea91952f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 986d3f3 convert license to SPDX format