solv_chksum_get
md5 = solv_chksum_get(chk, &md5l);
md5 = solv_chksum_get(chk, &md5l);
md5 = solv_chksum_get(chk, &md5l);
res = solv_chksum_get(handle, &l);
const unsigned char *solv_chksum_get(void *handle, int *lenp);