$ git clone -n https://src.fedoraproject.org/rpms/golang-github-opencontainers-runtime-spec.git /var/lib/mock/f40-build-2001690-44616/root/chroot_tmpdir/scmroot/golang-github-opencontainers-runtime-spec
Cloning into '/var/lib/mock/f40-build-2001690-44616/root/chroot_tmpdir/scmroot/golang-github-opencontainers-runtime-spec'...
$ git fetch origin 25fe92524ec6875d69202fe3a0eb25d0ba2e9793:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-opencontainers-runtime-spec
 * [new ref]         25fe92524ec6875d69202fe3a0eb25d0ba2e9793 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 25fe925 Update to 1.1.0