$ git clone -n https://src.fedoraproject.org/rpms/erlang-skerl.git /var/lib/mock/f41-build-820066-152070/root/chroot_tmpdir/scmroot/erlang-skerl
Cloning into '/var/lib/mock/f41-build-820066-152070/root/chroot_tmpdir/scmroot/erlang-skerl'...
$ git fetch origin 3df412dbc204f0a17e95faf800ce8943beb2c67b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-skerl
 * [new ref]         3df412dbc204f0a17e95faf800ce8943beb2c67b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3df412d Reuse standard headers