$ git clone -n https://src.fedoraproject.org/rpms/golang-github-yandex-cloud-genproto.git /var/lib/mock/f38-build-side-42-init-devel-1082519-29833/root/chroot_tmpdir/scmroot/golang-github-yandex-cloud-genproto
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1082519-29833/root/chroot_tmpdir/scmroot/golang-github-yandex-cloud-genproto'...
$ git fetch origin 3f5bc8a3612e776164ce786d369002e181d39fc8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-yandex-cloud-genproto
 * [new ref]         3f5bc8a3612e776164ce786d369002e181d39fc8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f5bc8a Added the README