$ git clone -n https://src.fedoraproject.org/rpms/co2mon.git /var/lib/mock/f45-build-4302-331/root/chroot_tmpdir/scmroot/co2mon
Cloning into '/var/lib/mock/f45-build-4302-331/root/chroot_tmpdir/scmroot/co2mon'...
$ git fetch origin 9281f31e31aaf37ed7ed8c62c65d5f3a000747fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/co2mon
 * [new ref]         9281f31e31aaf37ed7ed8c62c65d5f3a000747fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9281f31 Convert to %autorelease and %autochangelog