$ git clone -n https://src.fedoraproject.org/rpms/golang-github-hetznercloud-hcloud.git /var/lib/mock/f41-build-side-1-2878445-34443/root/chroot_tmpdir/scmroot/golang-github-hetznercloud-hcloud
Cloning into '/var/lib/mock/f41-build-side-1-2878445-34443/root/chroot_tmpdir/scmroot/golang-github-hetznercloud-hcloud'...
$ git fetch origin c26859a3efeb539c7854893886823ec91b36879c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-hetznercloud-hcloud
 * [new ref]         c26859a3efeb539c7854893886823ec91b36879c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c26859a Update to 2.13.1 upstream release