$ git clone -n https://src.fedoraproject.org/rpms/golang-github-envoyproxy-protoc-gen-validate.git /var/lib/mock/f45-build-11909-436/root/chroot_tmpdir/scmroot/golang-github-envoyproxy-protoc-gen-validate
Cloning into '/var/lib/mock/f45-build-11909-436/root/chroot_tmpdir/scmroot/golang-github-envoyproxy-protoc-gen-validate'...
$ git fetch origin eb2602596db0bc918726d102b326e7050da1ec54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-envoyproxy-protoc-gen-validate
 * [new ref]         eb2602596db0bc918726d102b326e7050da1ec54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb26025 rebuild