$ git clone -n https://src.fedoraproject.org/rpms/erlang-exometer_core.git /var/lib/mock/f41-build-749606-13378/root/chroot_tmpdir/scmroot/erlang-exometer_core
Cloning into '/var/lib/mock/f41-build-749606-13378/root/chroot_tmpdir/scmroot/erlang-exometer_core'...
$ git fetch origin aa99ebf3099331814aaf7948b699ca3a8c3c469f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/erlang-exometer_core
 * [new ref]         aa99ebf3099331814aaf7948b699ca3a8c3c469f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa99ebf More macros