$ git clone -n https://src.fedoraproject.org/rpms/golang-github-hashicorp-checkpoint.git /var/lib/mock/f40-build-2000703-44500/root/chroot_tmpdir/scmroot/golang-github-hashicorp-checkpoint
Cloning into '/var/lib/mock/f40-build-2000703-44500/root/chroot_tmpdir/scmroot/golang-github-hashicorp-checkpoint'...
$ git fetch origin 3e8bb62094be565f6fa52e73f595cac4adee7160:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-hashicorp-checkpoint
 * [new ref]         3e8bb62094be565f6fa52e73f595cac4adee7160 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3e8bb62 Initial import