$ git clone -n https://src.fedoraproject.org/rpms/tinygo.git /var/lib/mock/f39-build-1512434-35565/root/chroot_tmpdir/scmroot/tinygo
Cloning into '/var/lib/mock/f39-build-1512434-35565/root/chroot_tmpdir/scmroot/tinygo'...
$ git fetch origin 1eb5a805d62f8755753e595f7126a3ce0dff59e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tinygo
 * [new ref]         1eb5a805d62f8755753e595f7126a3ce0dff59e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1eb5a80 Skip a broken test