$ git clone -n https://src.fedoraproject.org/rpms/goose.git /var/lib/mock/f45-build-39620-750/root/chroot_tmpdir/scmroot/goose
Cloning into '/var/lib/mock/f45-build-39620-750/root/chroot_tmpdir/scmroot/goose'...
$ git fetch origin a56be9da1fbdc9b9e2636322664a6be1aa65bf2a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/goose
 * [new ref]         a56be9da1fbdc9b9e2636322664a6be1aa65bf2a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a56be9d Rebase for goose 1.45.0